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42016421000 = 235342016421
BaseRepresentation
bin100111001000010111…
…111011010010001000
311000110012022100002202
4213020113323102020
51142022200433000
631145125415332
73015130454141
oct471027732210
9130405270082
1042016421000
11169011a0a84
12818726a548
133c67a58c98
1420682dcac8
15115da3edd5
hex9c85fb488

42016421000 has 32 divisors (see below), whose sum is σ = 98318427480. Its totient is φ = 16806568000.

The previous prime is 42016420997. The next prime is 42016421059. The reversal of 42016421000 is 12461024.

It can be written as a sum of positive squares in 4 ways, for example, as 18293644516 + 23722776484 = 135254^2 + 154022^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21007211 + ... + 21009210.

Almost surely, 242016421000 is an apocalyptic number.

42016421000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42016421000 is an abundant number, since it is smaller than the sum of its proper divisors (56302006480).

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

42016421000 is a wasteful number, since it uses less digits than its factorization.

42016421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42016442 (or 42016428 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42016421000 its reverse (12461024), we get a palindrome (42028882024).

The spelling of 42016421000 in words is "forty-two billion, sixteen million, four hundred twenty-one thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000 42016421 84032842 168065684 210082105 336131368 420164210 840328420 1050410525 1680656840 2100821050 4201642100 5252052625 8403284200 10504105250 21008210500 42016421000