720342136 has 32 divisors (see below), whose sum is σ = 1470762000. Its totient is φ = 329446656.

The previous prime is 720342131. The next prime is 720342167. The reversal of 720342136 is 631243027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720342131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77301 + ... + 86116.

Almost surely, 2^720342136 is an apocalyptic number.

720342136 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

720342136 is an abundant number, since it is smaller than the sum of its proper divisors (750419864).

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

720342136 is a wasteful number, since it uses less digits than its factorization.

720342136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163471 (or 163467 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 720342136 is about 26839.1903007524. The cubic root of 720342136 is about 896.4228944130.

The spelling of 720342136 in words is "seven hundred twenty million, three hundred forty-two thousand, one hundred thirty-six".