100042512 has 20 divisors (see below), whose sum is σ = 258443280. Its totient is φ = 33347488.

The previous prime is 100042499. The next prime is 100042513. The reversal of 100042512 is 215240001.

It is a junction number, because it is equal to n+sod(n) for n = 100042491 and 100042500.

It is not an unprimeable number, because it can be changed into a prime (100042513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042062 + ... + 1042157.

It is an arithmetic number, because the mean of its divisors is an integer number (12922164).

Almost surely, 2^100042512 is an apocalyptic number.

100042512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100042512 is an abundant number, since it is smaller than the sum of its proper divisors (158400768).

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

100042512 is a wasteful number, since it uses less digits than its factorization.

100042512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084230 (or 2084224 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100042512 is about 10002.1253741392. The cubic root of 100042512 is about 464.2246484510.

Adding to 100042512 its reverse (215240001), we get a palindrome (315282513).

The spelling of 100042512 in words is "one hundred million, forty-two thousand, five hundred twelve".