142136520 has 32 divisors (see below), whose sum is σ = 426409920. Its totient is φ = 37903040.

The previous prime is 142136483. The next prime is 142136521. The reversal of 142136520 is 25631241.

142136520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (142136521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592116 + ... + 592355.

It is an arithmetic number, because the mean of its divisors is an integer number (13325310).

Almost surely, 2^142136520 is an apocalyptic number.

142136520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142136520 is an abundant number, since it is smaller than the sum of its proper divisors (284273400).

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

142136520 is a wasteful number, since it uses less digits than its factorization.

142136520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184485 (or 1184481 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 142136520 is about 11922.1021636287. The cubic root of 142136520 is about 521.8774833209.

Adding to 142136520 its reverse (25631241), we get a palindrome (167767761).

The spelling of 142136520 in words is "one hundred forty-two million, one hundred thirty-six thousand, five hundred twenty".