142637880 has 256 divisors, whose sum is σ = 547430400. Its totient is φ = 28869120.

The previous prime is 142637867. The next prime is 142637933. The reversal of 142637880 is 88736241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 397141 + ... + 397499.

It is an arithmetic number, because the mean of its divisors is an integer number (2138400).

Almost surely, 2^142637880 is an apocalyptic number.

142637880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142637880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273715200).

142637880 is an abundant number, since it is smaller than the sum of its proper divisors (404792520).

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

142637880 is a wasteful number, since it uses less digits than its factorization.

142637880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 142637880 is about 11943.1101476960. The cubic root of 142637880 is about 522.4903716852.

The spelling of 142637880 in words is "one hundred forty-two million, six hundred thirty-seven thousand, eight hundred eighty".