9042731 has 4 divisors (see below), whose sum is σ = 9334464. Its totient is φ = 8751000.

The previous prime is 9042713. The next prime is 9042739. The reversal of 9042731 is 1372409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1372409 = 173 ⋅7933.

It is a cyclic number.

It is not a de Polignac number, because 9042731 - 2²² = 4848427 is a prime.

It is a super-2 number, since 2×9042731² = 163541967876722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9042731.

It is not an unprimeable number, because it can be changed into a prime (9042739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145820 + ... + 145881.

It is an arithmetic number, because the mean of its divisors is an integer number (2333616).

Almost surely, 2^9042731 is an apocalyptic number.

9042731 is a deficient number, since it is larger than the sum of its proper divisors (291733).

9042731 is a wasteful number, since it uses less digits than its factorization.

9042731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291732.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 9042731 is about 3007.1133999236. The cubic root of 9042731 is about 208.3370629021.

The spelling of 9042731 in words is "nine million, forty-two thousand, seven hundred thirty-one".