742271520 has 48 divisors (see below), whose sum is σ = 2338156800. Its totient is φ = 197938944.

The previous prime is 742271513. The next prime is 742271521. The reversal of 742271520 is 25172247.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×742271520² = 1101934018806220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (742271521) 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, 772720 + ... + 773679.

It is an arithmetic number, because the mean of its divisors is an integer number (48711600).

Almost surely, 2^742271520 is an apocalyptic number.

It is an amenable number.

742271520 is an abundant number, since it is smaller than the sum of its proper divisors (1595885280).

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

742271520 is a wasteful number, since it uses less digits than its factorization.

742271520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546417 (or 1546409 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 742271520 is about 27244.6603942864. The cubic root of 742271520 is about 905.4287194746.

The spelling of 742271520 in words is "seven hundred forty-two million, two hundred seventy-one thousand, five hundred twenty".