142520520135 has 32 divisors (see below), whose sum is σ = 260994028032. Its totient is φ = 65055968640.

The previous prime is 142520520029. The next prime is 142520520139. The reversal of 142520520135 is 531025025241.

142520520135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142520520135 - 2⁸ = 142520519879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142520520139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 931381 + ... + 1073550.

It is an arithmetic number, because the mean of its divisors is an integer number (8156063376).

Almost surely, 2^142520520135 is an apocalyptic number.

142520520135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142520520135 is a deficient number, since it is larger than the sum of its proper divisors (118473507897).

142520520135 is a wasteful number, since it uses less digits than its factorization.

142520520135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005623.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 142520520135 its reverse (531025025241), we get a palindrome (673545545376).

The spelling of 142520520135 in words is "one hundred forty-two billion, five hundred twenty million, five hundred twenty thousand, one hundred thirty-five".