136742644 has 6 divisors (see below), whose sum is σ = 239299634. Its totient is φ = 68371320.

The previous prime is 136742633. The next prime is 136742719. The reversal of 136742644 is 446247631.

136742644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 135443044 + 1299600 = 11638^2 + 1140^2 .

It is a super-2 number, since 2×136742644² = 37397101376221472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17092827 + ... + 17092834.

Almost surely, 2^136742644 is an apocalyptic number.

It is an amenable number.

136742644 is a deficient number, since it is larger than the sum of its proper divisors (102556990).

136742644 is a wasteful number, since it uses less digits than its factorization.

136742644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34185665 (or 34185663 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 136742644 is about 11693.7010394485. The cubic root of 136742644 is about 515.1906718490.

The spelling of 136742644 in words is "one hundred thirty-six million, seven hundred forty-two thousand, six hundred forty-four".