142443900 has 72 divisors (see below), whose sum is σ = 457939440. Its totient is φ = 37984320.

The previous prime is 142443871. The next prime is 142443919. The reversal of 142443900 is 9344241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23679 + ... + 29078.

It is an arithmetic number, because the mean of its divisors is an integer number (6360270).

Almost surely, 2^142443900 is an apocalyptic number.

142443900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142443900 is an abundant number, since it is smaller than the sum of its proper divisors (315495540).

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

142443900 is a wasteful number, since it uses less digits than its factorization.

142443900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52780 (or 52767 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 142443900 is about 11934.9863845754. The cubic root of 142443900 is about 522.2534111111.

The spelling of 142443900 in words is "one hundred forty-two million, four hundred forty-three thousand, nine hundred".