142136556 has 12 divisors (see below), whose sum is σ = 331651992. Its totient is φ = 47378848.

The previous prime is 142136521. The next prime is 142136557. The reversal of 142136556 is 655631241.

142136556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×142136556² = 40405601103082272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142136557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5922345 + ... + 5922368.

It is an arithmetic number, because the mean of its divisors is an integer number (27637666).

Almost surely, 2^142136556 is an apocalyptic number.

It is an amenable number.

142136556 is an abundant number, since it is smaller than the sum of its proper divisors (189515436).

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

142136556 is a wasteful number, since it uses less digits than its factorization.

142136556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11844720 (or 11844718 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 142136556 is about 11922.1036734295. The cubic root of 142136556 is about 521.8775273809.

Adding to 142136556 its reverse (655631241), we get a palindrome (797767797).

The spelling of 142136556 in words is "one hundred forty-two million, one hundred thirty-six thousand, five hundred fifty-six".