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42021140202 = 2331940956277
BaseRepresentation
bin100111001000101001…
…111011011011101010
311000110112012002122000
4213020221323123222
51142024402441302
631145414511430
73015215540556
oct471051733352
9130415162560
1042021140202
1116903924648
128188965576
133c68a1c002
142068baa866
15115e17331c
hex9c8a7b6ea

42021140202 has 32 divisors (see below), whose sum is σ = 98295067200. Its totient is φ = 13269833424.

The previous prime is 42021140201. The next prime is 42021140237. The reversal of 42021140202 is 20204112024.

42021140202 is a `hidden beast` number, since 420 + 2 + 1 + 1 + 40 + 202 = 666.

It is a super-2 number, since 2×420211402022 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (42021140201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20477113 + ... + 20479164.

It is an arithmetic number, because the mean of its divisors is an integer number (3071720850).

Almost surely, 242021140202 is an apocalyptic number.

42021140202 is an abundant number, since it is smaller than the sum of its proper divisors (56273926998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42021140202 is a wasteful number, since it uses less digits than its factorization.

42021140202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40956307 (or 40956301 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 42021140202 its reverse (20204112024), we get a palindrome (62225252226).

The spelling of 42021140202 in words is "forty-two billion, twenty-one million, one hundred forty thousand, two hundred two".

Divisors: 1 2 3 6 9 18 19 27 38 54 57 114 171 342 513 1026 40956277 81912554 122868831 245737662 368606493 737212986 778169263 1105819479 1556338526 2211638958 2334507789 4669015578 7003523367 14007046734 21010570101 42021140202