742658731 has 2 divisors, whose sum is σ = 742658732. Its totient is φ = 742658730.

The previous prime is 742658729. The next prime is 742658743. The reversal of 742658731 is 137856247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 742658731 - 2¹ = 742658729 is a prime.

It is a super-2 number, since 2×742658731² = 1103083981461060722, which contains 22 as substring.

Together with 742658729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (742658701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371329365 + 371329366.

It is an arithmetic number, because the mean of its divisors is an integer number (371329366).

Almost surely, 2^742658731 is an apocalyptic number.

742658731 is a deficient number, since it is larger than the sum of its proper divisors (1).

742658731 is an equidigital number, since it uses as much as digits as its factorization.

742658731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The square root of 742658731 is about 27251.7656492199. The cubic root of 742658731 is about 905.5861331277.

The spelling of 742658731 in words is "seven hundred forty-two million, six hundred fifty-eight thousand, seven hundred thirty-one".