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42203130 = 2351406771
BaseRepresentation
bin1010000011111…
…1011111111010
32221102010210220
42200333133322
541301000010
64104320510
71021502124
oct240773772
987363726
1042203130
1121905922
1212173136
138988588
145868214
153a89970
hex283f7fa

42203130 has 16 divisors (see below), whose sum is σ = 101287584. Its totient is φ = 11254160.

The previous prime is 42203111. The next prime is 42203131. The reversal of 42203130 is 3130224.

It is a super-2 number, since 2×422031302 = 3562208363593800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42203131) by changing a digit.

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, 703356 + ... + 703415.

It is an arithmetic number, because the mean of its divisors is an integer number (6330474).

Almost surely, 242203130 is an apocalyptic number.

42203130 is an abundant number, since it is smaller than the sum of its proper divisors (59084454).

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

42203130 is a wasteful number, since it uses less digits than its factorization.

42203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406781.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 42203130 is about 6496.3936149221. The cubic root of 42203130 is about 348.1621486400.

Adding to 42203130 its reverse (3130224), we get a palindrome (45333354).

The spelling of 42203130 in words is "forty-two million, two hundred three thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1406771 2813542 4220313 7033855 8440626 14067710 21101565 42203130