135125442 has 32 divisors (see below), whose sum is σ = 310636800. Its totient is φ = 43488144.

The previous prime is 135125387. The next prime is 135125449. The reversal of 135125442 is 244521531.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (135125449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41578 + ... + 44709.

It is an arithmetic number, because the mean of its divisors is an integer number (9707400).

Almost surely, 2^135125442 is an apocalyptic number.

135125442 is an abundant number, since it is smaller than the sum of its proper divisors (175511358).

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

135125442 is a wasteful number, since it uses less digits than its factorization.

135125442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86327 (or 86321 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 135125442 is about 11624.3469493989. The cubic root of 135125442 is about 513.1516257795.

Adding to 135125442 its reverse (244521531), we get a palindrome (379646973).

The spelling of 135125442 in words is "one hundred thirty-five million, one hundred twenty-five thousand, four hundred forty-two".