142521044 has 6 divisors (see below), whose sum is σ = 249411834. Its totient is φ = 71260520.

The previous prime is 142521019. The next prime is 142521059. The reversal of 142521044 is 440125241.

It can be written as a sum of positive squares in only one way, i.e., 135024400 + 7496644 = 11620^2 + 2738^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17815127 + ... + 17815134.

It is an arithmetic number, because the mean of its divisors is an integer number (41568639).

Almost surely, 2^142521044 is an apocalyptic number.

It is an amenable number.

142521044 is a deficient number, since it is larger than the sum of its proper divisors (106890790).

142521044 is a wasteful number, since it uses less digits than its factorization.

142521044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35630265 (or 35630263 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 142521044 is about 11938.2177899383. The cubic root of 142521044 is about 522.3476738261.

Adding to 142521044 its reverse (440125241), we get a palindrome (582646285).

The spelling of 142521044 in words is "one hundred forty-two million, five hundred twenty-one thousand, forty-four".