7042731 has 4 divisors (see below), whose sum is σ = 9390312. Its totient is φ = 4695152.

The previous prime is 7042727. The next prime is 7042747. The reversal of 7042731 is 1372407.

7042731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1372407 = 3 ⋅457469.

It is a cyclic number.

It is not a de Polignac number, because 7042731 - 2² = 7042727 is a prime.

It is a super-2 number, since 2×7042731² = 99200119876722, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (7042781) 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, 1173786 + ... + 1173791.

It is an arithmetic number, because the mean of its divisors is an integer number (2347578).

Almost surely, 2^7042731 is an apocalyptic number.

7042731 is a deficient number, since it is larger than the sum of its proper divisors (2347581).

7042731 is a wasteful number, since it uses less digits than its factorization.

7042731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347580.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 7042731 is about 2653.8144245595. The cubic root of 7042731 is about 191.6815739718.

The spelling of 7042731 in words is "seven million, forty-two thousand, seven hundred thirty-one".