135021507 has 8 divisors (see below), whose sum is σ = 182307840. Its totient is φ = 88874760.

The previous prime is 135021499. The next prime is 135021521. The reversal of 135021507 is 705120531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135021507 - 2³ = 135021499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135021577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284619 + ... + 285092.

It is an arithmetic number, because the mean of its divisors is an integer number (22788480).

Almost surely, 2^135021507 is an apocalyptic number.

135021507 is a deficient number, since it is larger than the sum of its proper divisors (47286333).

135021507 is an equidigital number, since it uses as much as digits as its factorization.

135021507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569793.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 135021507 is about 11619.8755156843. The cubic root of 135021507 is about 513.0200243733.

The spelling of 135021507 in words is "one hundred thirty-five million, twenty-one thousand, five hundred seven".