136024721 has 12 divisors (see below), whose sum is σ = 159011712. Its totient is φ = 113934456.

The previous prime is 136024717. The next prime is 136024723. The reversal of 136024721 is 127420631.

It is not a de Polignac number, because 136024721 - 2² = 136024717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136024723) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 211226 + ... + 211868.

It is an arithmetic number, because the mean of its divisors is an integer number (13250976).

Almost surely, 2^136024721 is an apocalyptic number.

It is an amenable number.

136024721 is a deficient number, since it is larger than the sum of its proper divisors (22986991).

136024721 is an frugal number, since it uses more digits than its factorization.

136024721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 136024721 is about 11662.9636456606. The cubic root of 136024721 is about 514.2874753871.

The spelling of 136024721 in words is "one hundred thirty-six million, twenty-four thousand, seven hundred twenty-one".