742508 has 24 divisors (see below), whose sum is σ = 1422960. Its totient is φ = 336960.

The previous prime is 742507. The next prime is 742513. The reversal of 742508 is 805247.

742508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (742507) 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, 5603 + ... + 5733.

It is an arithmetic number, because the mean of its divisors is an integer number (59290).

2⁷⁴²⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

742508 is a deficient number, since it is larger than the sum of its proper divisors (680452).

742508 is a wasteful number, since it uses less digits than its factorization.

With its successor (742509) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (257).

742508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 742508 is about 861.6890390390. The cubic root of 742508 is about 90.5524862662.

The spelling of 742508 in words is "seven hundred forty-two thousand, five hundred eight".