142636144 has 40 divisors (see below), whose sum is σ = 321809760. Its totient is φ = 59973888.

The previous prime is 142636121. The next prime is 142636163. The reversal of 142636144 is 441636241.

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, 6079 + ... + 17950.

It is an arithmetic number, because the mean of its divisors is an integer number (8045244).

Almost surely, 2^142636144 is an apocalyptic number.

142636144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

142636144 is an abundant number, since it is smaller than the sum of its proper divisors (179173616).

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

142636144 is a wasteful number, since it uses less digits than its factorization.

142636144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24097 (or 24091 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 142636144 is about 11943.0374695887. The cubic root of 142636144 is about 522.4882519889.

The spelling of 142636144 in words is "one hundred forty-two million, six hundred thirty-six thousand, one hundred forty-four".