7242731 has 8 divisors (see below), whose sum is σ = 7756560. Its totient is φ = 6738688.

The previous prime is 7242727. The next prime is 7242733. The reversal of 7242731 is 1372427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7242731 - 2² = 7242727 is a prime.

It is a super-2 number, since 2×7242731² = 104914304676722, 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 7242731.

It is not an unprimeable number, because it can be changed into a prime (7242733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 881 + ... + 3906.

It is an arithmetic number, because the mean of its divisors is an integer number (969570).

Almost surely, 2^7242731 is an apocalyptic number.

7242731 is a deficient number, since it is larger than the sum of its proper divisors (513829).

7242731 is a wasteful number, since it uses less digits than its factorization.

7242731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893.

The product of its digits is 2352, while the sum is 26.

The square root of 7242731 is about 2691.2322456451. The cubic root of 7242731 is about 193.4791267182.

The spelling of 7242731 in words is "seven million, two hundred forty-two thousand, seven hundred thirty-one".