240431142 has 24 divisors (see below), whose sum is σ = 559371096. Its totient is φ = 68694528.

The previous prime is 240431137. The next prime is 240431171. The reversal of 240431142 is 241134042.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408603 + ... + 409190.

It is an arithmetic number, because the mean of its divisors is an integer number (23307129).

Almost surely, 2^240431142 is an apocalyptic number.

240431142 is an abundant number, since it is smaller than the sum of its proper divisors (318939954).

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

240431142 is a wasteful number, since it uses less digits than its factorization.

240431142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817812 (or 817805 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 240431142 is about 15505.8421893169. The cubic root of 240431142 is about 621.8184059236.

Adding to 240431142 its reverse (241134042), we get a palindrome (481565184).

The spelling of 240431142 in words is "two hundred forty million, four hundred thirty-one thousand, one hundred forty-two".