240342456 has 32 divisors (see below), whose sum is σ = 626981760. Its totient is φ = 76630752.

The previous prime is 240342397. The next prime is 240342461. The reversal of 240342456 is 654243042.

It is a super-2 number, since 2×240342456² = 115528992312223872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217150 + ... + 218253.

It is an arithmetic number, because the mean of its divisors is an integer number (19593180).

Almost surely, 2^240342456 is an apocalyptic number.

It is an amenable number.

240342456 is an abundant number, since it is smaller than the sum of its proper divisors (386639304).

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

240342456 is a wasteful number, since it uses less digits than its factorization.

240342456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435435 (or 435431 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 240342456 is about 15502.9821647320. The cubic root of 240342456 is about 621.7419413849.

Adding to 240342456 its reverse (654243042), we get a palindrome (894585498).

The spelling of 240342456 in words is "two hundred forty million, three hundred forty-two thousand, four hundred fifty-six".