8731042 has 4 divisors (see below), whose sum is σ = 13096566. Its totient is φ = 4365520.

The previous prime is 8731039. The next prime is 8731069. The reversal of 8731042 is 2401378.

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., 4532641 + 4198401 = 2129^2 + 2049^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8730998 and 8731016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2182759 + ... + 2182762.

Almost surely, 2^8731042 is an apocalyptic number.

8731042 is a deficient number, since it is larger than the sum of its proper divisors (4365524).

8731042 is a wasteful number, since it uses less digits than its factorization.

8731042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4365523.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 8731042 is about 2954.8336670615. The cubic root of 8731042 is about 205.9153358058.

The spelling of 8731042 in words is "eight million, seven hundred thirty-one thousand, forty-two".