142138752 has 64 divisors (see below), whose sum is σ = 431500800. Its totient is φ = 40610304.

The previous prime is 142138727. The next prime is 142138807. The reversal of 142138752 is 257831241.

It is a tau number, because it is divible by the number of its divisors (64).

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, 23752 + ... + 29127.

It is an arithmetic number, because the mean of its divisors is an integer number (6742200).

Almost surely, 2^142138752 is an apocalyptic number.

142138752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142138752 is an abundant number, since it is smaller than the sum of its proper divisors (289362048).

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

142138752 is an equidigital number, since it uses as much as digits as its factorization.

142138752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52903 (or 52891 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 142138752 is about 11922.1957709140. The cubic root of 142138752 is about 521.8802150243.

Adding to 142138752 its reverse (257831241), we get a palindrome (399969993).

The spelling of 142138752 in words is "one hundred forty-two million, one hundred thirty-eight thousand, seven hundred fifty-two".