100638342 has 32 divisors (see below), whose sum is σ = 255590400. Its totient is φ = 28753704.

The previous prime is 100638331. The next prime is 100638389. The reversal of 100638342 is 243836001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132742 + ... + 133497.

It is an arithmetic number, because the mean of its divisors is an integer number (7987200).

Almost surely, 2^100638342 is an apocalyptic number.

100638342 is an abundant number, since it is smaller than the sum of its proper divisors (154952058).

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

100638342 is a wasteful number, since it uses less digits than its factorization.

100638342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266257 (or 266251 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 100638342 is about 10031.8663268606. The cubic root of 100638342 is about 465.1444296410.

The spelling of 100638342 in words is "one hundred million, six hundred thirty-eight thousand, three hundred forty-two".