135229972 has 24 divisors (see below), whose sum is σ = 252971712. Its totient is φ = 63096000.

The previous prime is 135229961. The next prime is 135229979. The reversal of 135229972 is 279922531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135229979) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14154 + ... + 21697.

It is an arithmetic number, because the mean of its divisors is an integer number (10540488).

Almost surely, 2^135229972 is an apocalyptic number.

It is an amenable number.

135229972 is a deficient number, since it is larger than the sum of its proper divisors (117741740).

135229972 is a wasteful number, since it uses less digits than its factorization.

135229972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35919 (or 35917 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 135229972 is about 11628.8422467587. The cubic root of 135229972 is about 513.2839125226.

The spelling of 135229972 in words is "one hundred thirty-five million, two hundred twenty-nine thousand, nine hundred seventy-two".