142621144 has 32 divisors (see below), whose sum is σ = 282124800. Its totient is φ = 67404960.

The previous prime is 142621139. The next prime is 142621181. The reversal of 142621144 is 441126241.

142621144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 95169 + ... + 96655.

It is an arithmetic number, because the mean of its divisors is an integer number (8816400).

Almost surely, 2^142621144 is an apocalyptic number.

It is an amenable number.

142621144 is a deficient number, since it is larger than the sum of its proper divisors (139503656).

142621144 is a wasteful number, since it uses less digits than its factorization.

142621144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2139 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 142621144 is about 11942.4094721291. The cubic root of 142621144 is about 522.4699359242.

Adding to 142621144 its reverse (441126241), we get a palindrome (583747385).

The spelling of 142621144 in words is "one hundred forty-two million, six hundred twenty-one thousand, one hundred forty-four".