100342404 has 18 divisors (see below), whose sum is σ = 253643390. Its totient is φ = 33447456.

The previous prime is 100342387. The next prime is 100342441. The reversal of 100342404 is 404243001.

It can be written as a sum of positive squares in only one way, i.e., 81000000 + 19342404 = 9000^2 + 4398^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1393609 + ... + 1393680.

Almost surely, 2^100342404 is an apocalyptic number.

It is an amenable number.

100342404 is an abundant number, since it is smaller than the sum of its proper divisors (153300986).

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

100342404 is a wasteful number, since it uses less digits than its factorization.

100342404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787299 (or 2787294 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 100342404 is about 10017.1055699738. The cubic root of 100342404 is about 464.6880460563.

Adding to 100342404 its reverse (404243001), we get a palindrome (504585405).

The spelling of 100342404 in words is "one hundred million, three hundred forty-two thousand, four hundred four".