135129974 has 32 divisors (see below), whose sum is σ = 248417280. Its totient is φ = 53808768.

The previous prime is 135129971. The next prime is 135129989. The reversal of 135129974 is 479921531.

135129974 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135129971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15209 + ... + 22395.

It is an arithmetic number, because the mean of its divisors is an integer number (7763040).

Almost surely, 2^135129974 is an apocalyptic number.

135129974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

135129974 is a deficient number, since it is larger than the sum of its proper divisors (113287306).

135129974 is a wasteful number, since it uses less digits than its factorization.

135129974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7292.

The product of its digits is 68040, while the sum is 41.

The square root of 135129974 is about 11624.5418834464. The cubic root of 135129974 is about 513.1573626147.

The spelling of 135129974 in words is "one hundred thirty-five million, one hundred twenty-nine thousand, nine hundred seventy-four".