135261992 has 16 divisors (see below), whose sum is σ = 257091540. Its totient is φ = 66704256.

The previous prime is 135261991. The next prime is 135262009. The reversal of 135261992 is 299162531.

135261992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 134884996 + 376996 = 11614^2 + 614^2 .

It is not an unprimeable number, because it can be changed into a prime (135261991) 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, 115223 + ... + 116390.

Almost surely, 2^135261992 is an apocalyptic number.

It is an amenable number.

135261992 is a deficient number, since it is larger than the sum of its proper divisors (121829548).

135261992 is a wasteful number, since it uses less digits than its factorization.

135261992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231692 (or 231688 counting only the distinct ones).

The product of its digits is 29160, while the sum is 38.

The square root of 135261992 is about 11630.2189145347. The cubic root of 135261992 is about 513.3244214266.

The spelling of 135261992 in words is "one hundred thirty-five million, two hundred sixty-one thousand, nine hundred ninety-two".