438445242 has 24 divisors (see below), whose sum is σ = 959374260. Its totient is φ = 144700800.

The previous prime is 438445237. The next prime is 438445277. The reversal of 438445242 is 242544834.

It can be written as a sum of positive squares in 2 ways, for example, as 309372921 + 129072321 = 17589^2 + 11361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 438445197 and 438445206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118767 + ... + 122402.

Almost surely, 2^438445242 is an apocalyptic number.

438445242 is an abundant number, since it is smaller than the sum of its proper divisors (520929018).

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

438445242 is a wasteful number, since it uses less digits than its factorization.

438445242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241278 (or 241275 counting only the distinct ones).

The product of its digits is 122880, while the sum is 36.

The square root of 438445242 is about 20939.0840773898. The cubic root of 438445242 is about 759.6935756846.

The spelling of 438445242 in words is "four hundred thirty-eight million, four hundred forty-five thousand, two hundred forty-two".