136430642 has 4 divisors (see below), whose sum is σ = 204645966. Its totient is φ = 68215320.

The previous prime is 136430633. The next prime is 136430647. The reversal of 136430642 is 246034631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 133841761 + 2588881 = 11569^2 + 1609^2 .

It is a super-2 number, since 2×136430642² = 37226640153064328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136430647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34107659 + ... + 34107662.

Almost surely, 2^136430642 is an apocalyptic number.

136430642 is a deficient number, since it is larger than the sum of its proper divisors (68215324).

136430642 is an equidigital number, since it uses as much as digits as its factorization.

136430642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68215323.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 136430642 is about 11680.3528200136. The cubic root of 136430642 is about 514.7985412428.

The spelling of 136430642 in words is "one hundred thirty-six million, four hundred thirty thousand, six hundred forty-two".