100642512 has 40 divisors (see below), whose sum is σ = 260635104. Its totient is φ = 33464704.

The previous prime is 100642511. The next prime is 100642513. The reversal of 100642512 is 215246001.

It is an interprime number because it is at equal distance from previous prime (100642511) and next prime (100642513).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100642511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18898 + ... + 23630.

Almost surely, 2^100642512 is an apocalyptic number.

100642512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100642512 is an abundant number, since it is smaller than the sum of its proper divisors (159992592).

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

100642512 is a wasteful number, since it uses less digits than its factorization.

100642512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187 (or 5181 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 100642512 is about 10032.0741624053. The cubic root of 100642512 is about 465.1508540496.

Adding to 100642512 its reverse (215246001), we get a palindrome (315888513).

The spelling of 100642512 in words is "one hundred million, six hundred forty-two thousand, five hundred twelve".