750421540 has 24 divisors (see below), whose sum is σ = 1719148032. Its totient is φ = 272880480.

The previous prime is 750421523. The next prime is 750421547. The reversal of 750421540 is 45124057.

It is a junction number, because it is equal to n+sod(n) for n = 750421499 and 750421508.

It is not an unprimeable number, because it can be changed into a prime (750421547) 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 7 ways as a sum of consecutive naturals, for example, 1705284 + ... + 1705723.

It is an arithmetic number, because the mean of its divisors is an integer number (71631168).

Almost surely, 2^750421540 is an apocalyptic number.

It is an amenable number.

750421540 is an abundant number, since it is smaller than the sum of its proper divisors (968726492).

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

750421540 is a wasteful number, since it uses less digits than its factorization.

750421540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411027 (or 3411025 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 750421540 is about 27393.8230263686. The cubic root of 750421540 is about 908.7304843162.

Adding to 750421540 its reverse (45124057), we get a palindrome (795545597).

The spelling of 750421540 in words is "seven hundred fifty million, four hundred twenty-one thousand, five hundred forty".