136667842 has 12 divisors (see below), whose sum is σ = 210164598. Its totient is φ = 66615600.

The previous prime is 136667837. The next prime is 136667849. The reversal of 136667842 is 248766631.

It can be written as a sum of positive squares in only one way, i.e., 135001161 + 1666681 = 11619^2 + 1291^2 .

It is not an unprimeable number, because it can be changed into a prime (136667849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105217 + ... + 106507.

Almost surely, 2^136667842 is an apocalyptic number.

136667842 is a deficient number, since it is larger than the sum of its proper divisors (73496756).

136667842 is an frugal number, since it uses more digits than its factorization.

136667842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625 (or 1334 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 136667842 is about 11690.5022133354. The cubic root of 136667842 is about 515.0967135425.

The spelling of 136667842 in words is "one hundred thirty-six million, six hundred sixty-seven thousand, eight hundred forty-two".