135492921 has 12 divisors (see below), whose sum is σ = 198469440. Its totient is φ = 89055960.

The previous prime is 135492913. The next prime is 135492937. The reversal of 135492921 is 129294531.

It is not a de Polignac number, because 135492921 - 2³ = 135492913 is a prime.

It is a super-2 number, since 2×135492921² = 36716663282224482, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135492911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105381 + ... + 106658.

It is an arithmetic number, because the mean of its divisors is an integer number (16539120).

Almost surely, 2^135492921 is an apocalyptic number.

It is an amenable number.

135492921 is a deficient number, since it is larger than the sum of its proper divisors (62976519).

135492921 is a wasteful number, since it uses less digits than its factorization.

135492921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212116 (or 212113 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 135492921 is about 11640.1426537650. The cubic root of 135492921 is about 513.6163834592.

The spelling of 135492921 in words is "one hundred thirty-five million, four hundred ninety-two thousand, nine hundred twenty-one".