75031140 has 24 divisors (see below), whose sum is σ = 210087360. Its totient is φ = 20008288.

The previous prime is 75031139. The next prime is 75031141. The reversal of 75031140 is 4113057.

It is an interprime number because it is at equal distance from previous prime (75031139) and next prime (75031141).

It is not an unprimeable number, because it can be changed into a prime (75031141) 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, 625200 + ... + 625319.

It is an arithmetic number, because the mean of its divisors is an integer number (8753640).

Almost surely, 2^75031140 is an apocalyptic number.

It is an amenable number.

75031140 is an abundant number, since it is smaller than the sum of its proper divisors (135056220).

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

75031140 is a wasteful number, since it uses less digits than its factorization.

75031140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250531 (or 1250529 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 75031140 is about 8662.0517200026. The cubic root of 75031140 is about 421.7746901154.

Adding to 75031140 its reverse (4113057), we get a palindrome (79144197).

The spelling of 75031140 in words is "seventy-five million, thirty-one thousand, one hundred forty".