100100431242 has 48 divisors (see below), whose sum is σ = 247953618432. Its totient is φ = 28590213600.

The previous prime is 100100431217. The next prime is 100100431247. The reversal of 100100431242 is 242134001001.

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 (100100431247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231367 + ... + 503717.

It is an arithmetic number, because the mean of its divisors is an integer number (5165700384).

Almost surely, 2^100100431242 is an apocalyptic number.

100100431242 is an abundant number, since it is smaller than the sum of its proper divisors (147853187190).

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

100100431242 is a wasteful number, since it uses less digits than its factorization.

100100431242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275283 (or 275280 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 100100431242 its reverse (242134001001), we get a palindrome (342234432243).

The spelling of 100100431242 in words is "one hundred billion, one hundred million, four hundred thirty-one thousand, two hundred forty-two".