240142356 has 36 divisors (see below), whose sum is σ = 633421152. Its totient is φ = 76566864.

The previous prime is 240142351. The next prime is 240142361. The reversal of 240142356 is 653241042.

It is an interprime number because it is at equal distance from previous prime (240142351) and next prime (240142361).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×240142356² = 115336702290461472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240142351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144186 + ... + 145841.

It is an arithmetic number, because the mean of its divisors is an integer number (17595032).

Almost surely, 2^240142356 is an apocalyptic number.

It is an amenable number.

240142356 is an abundant number, since it is smaller than the sum of its proper divisors (393278796).

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

240142356 is a wasteful number, since it uses less digits than its factorization.

240142356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290060 (or 290055 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 240142356 is about 15496.5272238654. The cubic root of 240142356 is about 621.5693472360.

Adding to 240142356 its reverse (653241042), we get a palindrome (893383398).

The spelling of 240142356 in words is "two hundred forty million, one hundred forty-two thousand, three hundred fifty-six".