750717421 has 16 divisors (see below), whose sum is σ = 801013248. Its totient is φ = 702374400.

The previous prime is 750717389. The next prime is 750717427. The reversal of 750717421 is 124717057.

It is a cyclic number.

It is not a de Polignac number, because 750717421 - 2⁵ = 750717389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (750717427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141010 + ... + 146236.

It is an arithmetic number, because the mean of its divisors is an integer number (50063328).

Almost surely, 2^750717421 is an apocalyptic number.

It is an amenable number.

750717421 is a deficient number, since it is larger than the sum of its proper divisors (50295827).

750717421 is a wasteful number, since it uses less digits than its factorization.

750717421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5412.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 750717421 is about 27399.2229999320. Note that the first 3 decimals coincide. The cubic root of 750717421 is about 908.8499019767.

The spelling of 750717421 in words is "seven hundred fifty million, seven hundred seventeen thousand, four hundred twenty-one".