136320420 has 48 divisors (see below), whose sum is σ = 382435200. Its totient is φ = 36281856.

The previous prime is 136320413. The next prime is 136320427. The reversal of 136320420 is 24023631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (136320413) and next prime (136320427).

It is not an unprimeable number, because it can be changed into a prime (136320427) 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, 34044 + ... + 37836.

It is an arithmetic number, because the mean of its divisors is an integer number (7967400).

Almost surely, 2^136320420 is an apocalyptic number.

136320420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136320420 is an abundant number, since it is smaller than the sum of its proper divisors (246114780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136320420 is a wasteful number, since it uses less digits than its factorization.

136320420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404 (or 4402 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 136320420 is about 11675.6336016509. The cubic root of 136320420 is about 514.6598690417.

The spelling of 136320420 in words is "one hundred thirty-six million, three hundred twenty thousand, four hundred twenty".