135291172 has 12 divisors (see below), whose sum is σ = 249220720. Its totient is φ = 64085256.

The previous prime is 135291137. The next prime is 135291193. The reversal of 135291172 is 271192531.

It is a super-2 number, since 2×135291172² = 36607402442267168, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889998 + ... + 890149.

Almost surely, 2^135291172 is an apocalyptic number.

It is an amenable number.

135291172 is a deficient number, since it is larger than the sum of its proper divisors (113929548).

135291172 is a wasteful number, since it uses less digits than its factorization.

135291172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780170 (or 1780168 counting only the distinct ones).

The product of its digits is 3780, while the sum is 31.

The square root of 135291172 is about 11631.4733374582. The cubic root of 135291172 is about 513.3613318437.

The spelling of 135291172 in words is "one hundred thirty-five million, two hundred ninety-one thousand, one hundred seventy-two".