742908 has 12 divisors (see below), whose sum is σ = 1733480. Its totient is φ = 247632.

The previous prime is 742897. The next prime is 742909. The reversal of 742908 is 809247.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742909) by changing a digit.

742908 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30943 + ... + 30966.

2⁷⁴²⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

742908 is an abundant number, since it is smaller than the sum of its proper divisors (990572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742908 is a wasteful number, since it uses less digits than its factorization.

742908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61916 (or 61914 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 742908 is about 861.9211100791. The cubic root of 742908 is about 90.5687440000.

The spelling of 742908 in words is "seven hundred forty-two thousand, nine hundred eight".