142112440 has 16 divisors (see below), whose sum is σ = 319753080. Its totient is φ = 56844960.

The previous prime is 142112417. The next prime is 142112447. The reversal of 142112440 is 44211241.

142112440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142112447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1776366 + ... + 1776445.

Almost surely, 2^142112440 is an apocalyptic number.

142112440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142112440 is an abundant number, since it is smaller than the sum of its proper divisors (177640640).

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

142112440 is a wasteful number, since it uses less digits than its factorization.

142112440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552822 (or 3552818 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 142112440 is about 11921.0922318385. The cubic root of 142112440 is about 521.8480104368.

Adding to 142112440 its reverse (44211241), we get a palindrome (186323681).

It can be divided in two parts, 1421 and 12440, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 142112440 in words is "one hundred forty-two million, one hundred twelve thousand, four hundred forty".