135720074 has 16 divisors (see below), whose sum is σ = 234498048. Its totient is φ = 57706992.

The previous prime is 135720049. The next prime is 135720199. The reversal of 135720074 is 470027531.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36389 + ... + 39944.

It is an arithmetic number, because the mean of its divisors is an integer number (14656128).

Almost surely, 2^135720074 is an apocalyptic number.

135720074 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

135720074 is a deficient number, since it is larger than the sum of its proper divisors (98777974).

135720074 is a wasteful number, since it uses less digits than its factorization.

135720074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76469.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 135720074 is about 11649.8958793630. The cubic root of 135720074 is about 513.9032480511.

The spelling of 135720074 in words is "one hundred thirty-five million, seven hundred twenty thousand, seventy-four".