142544136 has 96 divisors (see below), whose sum is σ = 422547840. Its totient is φ = 39940992.

The previous prime is 142544123. The next prime is 142544161. The reversal of 142544136 is 631445241.

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, 61185 + ... + 63471.

It is an arithmetic number, because the mean of its divisors is an integer number (4401540).

Almost surely, 2^142544136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142544136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211273920).

142544136 is an abundant number, since it is smaller than the sum of its proper divisors (280003704).

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

142544136 is a wasteful number, since it uses less digits than its factorization.

142544136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363 (or 2352 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 142544136 is about 11939.1848968010. The cubic root of 142544136 is about 522.3758834639.

Adding to 142544136 its reverse (631445241), we get a palindrome (773989377).

The spelling of 142544136 in words is "one hundred forty-two million, five hundred forty-four thousand, one hundred thirty-six".