120142636 has 6 divisors (see below), whose sum is σ = 210249620. Its totient is φ = 60071316.

The previous prime is 120142619. The next prime is 120142637. The reversal of 120142636 is 636241021.

It is a self number, because there is not a number n which added to its sum of digits gives 120142636.

It is not an unprimeable number, because it can be changed into a prime (120142637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15017826 + ... + 15017833.

Almost surely, 2^120142636 is an apocalyptic number.

It is an amenable number.

120142636 is a deficient number, since it is larger than the sum of its proper divisors (90106984).

120142636 is a wasteful number, since it uses less digits than its factorization.

120142636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30035663 (or 30035661 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 120142636 is about 10960.9596295215. The cubic root of 120142636 is about 493.4377656116.

Adding to 120142636 its reverse (636241021), we get a palindrome (756383657).

The spelling of 120142636 in words is "one hundred twenty million, one hundred forty-two thousand, six hundred thirty-six".