135420872 has 16 divisors (see below), whose sum is σ = 264954240. Its totient is φ = 64766416.

The previous prime is 135420863. The next prime is 135420881. The reversal of 135420872 is 278024531.

It is an interprime number because it is at equal distance from previous prime (135420863) and next prime (135420881).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367808 + ... + 368175.

It is an arithmetic number, because the mean of its divisors is an integer number (16559640).

Almost surely, 2^135420872 is an apocalyptic number.

It is an amenable number.

135420872 is a deficient number, since it is larger than the sum of its proper divisors (129533368).

135420872 is a wasteful number, since it uses less digits than its factorization.

135420872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736012 (or 736008 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 135420872 is about 11637.0473918430. The cubic root of 135420872 is about 513.5253280059.

The spelling of 135420872 in words is "one hundred thirty-five million, four hundred twenty thousand, eight hundred seventy-two".