275142240 has 72 divisors (see below), whose sum is σ = 938927808. Its totient is φ = 73370880.

The previous prime is 275142233. The next prime is 275142271. The reversal of 275142240 is 42241572.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94096 + ... + 96975.

It is an arithmetic number, because the mean of its divisors is an integer number (13040664).

Almost surely, 2^275142240 is an apocalyptic number.

275142240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275142240 is an abundant number, since it is smaller than the sum of its proper divisors (663785568).

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

275142240 is a wasteful number, since it uses less digits than its factorization.

275142240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191092 (or 191081 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 275142240 is about 16587.4120947181. The cubic root of 275142240 is about 650.4078229657.

The spelling of 275142240 in words is "two hundred seventy-five million, one hundred forty-two thousand, two hundred forty".