142512440 has 32 divisors (see below), whose sum is σ = 366461280. Its totient is φ = 48861312.

The previous prime is 142512431. The next prime is 142512443. The reversal of 142512440 is 44215241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142512443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254207 + ... + 254766.

It is an arithmetic number, because the mean of its divisors is an integer number (11451915).

Almost surely, 2^142512440 is an apocalyptic number.

142512440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142512440 is an abundant number, since it is smaller than the sum of its proper divisors (223948840).

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

142512440 is a wasteful number, since it uses less digits than its factorization.

142512440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508991 (or 508987 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 142512440 is about 11937.8574292040. The cubic root of 142512440 is about 522.3371622326.

Adding to 142512440 its reverse (44215241), we get a palindrome (186727681).

The spelling of 142512440 in words is "one hundred forty-two million, five hundred twelve thousand, four hundred forty".