135021610 has 16 divisors (see below), whose sum is σ = 248967432. Its totient is φ = 52691200.

The previous prime is 135021589. The next prime is 135021611. The reversal of 135021610 is 16120531.

It can be written as a sum of positive squares in 4 ways, for example, as 76545001 + 58476609 = 8749^2 + 7647^2 .

It is not an unprimeable number, because it can be changed into a prime (135021611) 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, 164251 + ... + 165070.

Almost surely, 2^135021610 is an apocalyptic number.

135021610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135021610 is a deficient number, since it is larger than the sum of its proper divisors (113945822).

135021610 is a wasteful number, since it uses less digits than its factorization.

135021610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329369.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 135021610 is about 11619.8799477447. The cubic root of 135021610 is about 513.0201548242.

The spelling of 135021610 in words is "one hundred thirty-five million, twenty-one thousand, six hundred ten".