742956720 has 80 divisors (see below), whose sum is σ = 2512553472. Its totient is φ = 180110080.

The previous prime is 742956679. The next prime is 742956727. The reversal of 742956720 is 27659247.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (742956727) by changing a digit.

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, 138072 + ... + 143351.

Almost surely, 2^742956720 is an apocalyptic number.

It is an amenable number.

742956720 is an abundant number, since it is smaller than the sum of its proper divisors (1769596752).

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

742956720 is a wasteful number, since it uses less digits than its factorization.

742956720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281450 (or 281444 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 742956720 is about 27257.2324347135. The cubic root of 742956720 is about 905.7072379324.

The spelling of 742956720 in words is "seven hundred forty-two million, nine hundred fifty-six thousand, seven hundred twenty".