742439724 has 48 divisors (see below), whose sum is σ = 1946740992. Its totient is φ = 218509632.

The previous prime is 742439717. The next prime is 742439773. The reversal of 742439724 is 427934247.

It is a super-3 number, since 3×742439724³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 99874 + ... + 107049.

It is an arithmetic number, because the mean of its divisors is an integer number (40557104).

Almost surely, 2^742439724 is an apocalyptic number.

It is an amenable number.

742439724 is an abundant number, since it is smaller than the sum of its proper divisors (1204301268).

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

742439724 is a wasteful number, since it uses less digits than its factorization.

742439724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206966 (or 206964 counting only the distinct ones).

The product of its digits is 338688, while the sum is 42.

The square root of 742439724 is about 27247.7471362313. The cubic root of 742439724 is about 905.4971065028.

The spelling of 742439724 in words is "seven hundred forty-two million, four hundred thirty-nine thousand, seven hundred twenty-four".