916431242 has 4 divisors (see below), whose sum is σ = 1374646866. Its totient is φ = 458215620.

The previous prime is 916431209. The next prime is 916431253. The reversal of 916431242 is 242134619.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 685968481 + 230462761 = 26191^2 + 15181^2 .

It is a junction number, because it is equal to n+sod(n) for n = 916431199 and 916431208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229107809 + ... + 229107812.

Almost surely, 2^916431242 is an apocalyptic number.

916431242 is a deficient number, since it is larger than the sum of its proper divisors (458215624).

916431242 is a wasteful number, since it uses less digits than its factorization.

916431242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458215623.

The product of its digits is 10368, while the sum is 32.

The square root of 916431242 is about 30272.6153809016. The cubic root of 916431242 is about 971.3296117742.

The spelling of 916431242 in words is "nine hundred sixteen million, four hundred thirty-one thousand, two hundred forty-two".