136021385 has 8 divisors (see below), whose sum is σ = 163294656. Its totient is φ = 108771120.

The previous prime is 136021367. The next prime is 136021453. The reversal of 136021385 is 583120631.

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

It is not a de Polignac number, because 136021385 - 2¹⁰ = 136020361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 12572 + ... + 20738.

It is an arithmetic number, because the mean of its divisors is an integer number (20411832).

Almost surely, 2^136021385 is an apocalyptic number.

It is an amenable number.

136021385 is a deficient number, since it is larger than the sum of its proper divisors (27273271).

136021385 is an equidigital number, since it uses as much as digits as its factorization.

136021385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11503.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 136021385 is about 11662.8206279613. The cubic root of 136021385 is about 514.2832710606.

The spelling of 136021385 in words is "one hundred thirty-six million, twenty-one thousand, three hundred eighty-five".