742903531 has 2 divisors, whose sum is σ = 742903532. Its totient is φ = 742903530.

The previous prime is 742903523. The next prime is 742903589. The reversal of 742903531 is 135309247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 742903531 - 2³ = 742903523 is a prime.

It is a super-2 number, since 2×742903531² = 1103811312744535922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (742900531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371451765 + 371451766.

It is an arithmetic number, because the mean of its divisors is an integer number (371451766).

Almost surely, 2^742903531 is an apocalyptic number.

742903531 is a deficient number, since it is larger than the sum of its proper divisors (1).

742903531 is an equidigital number, since it uses as much as digits as its factorization.

742903531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 742903531 is about 27256.2567312535. The cubic root of 742903531 is about 905.6856239268.

The spelling of 742903531 in words is "seven hundred forty-two million, nine hundred three thousand, five hundred thirty-one".