136205642 has 8 divisors (see below), whose sum is σ = 215061600. Its totient is φ = 64518444.

The previous prime is 136205633. The next prime is 136205647. The reversal of 136205642 is 246502631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (136205647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792142 + ... + 1792217.

It is an arithmetic number, because the mean of its divisors is an integer number (26882700).

Almost surely, 2^136205642 is an apocalyptic number.

136205642 is a deficient number, since it is larger than the sum of its proper divisors (78855958).

136205642 is a wasteful number, since it uses less digits than its factorization.

136205642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584380.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 136205642 is about 11670.7172872964. The cubic root of 136205642 is about 514.5153853879.

The spelling of 136205642 in words is "one hundred thirty-six million, two hundred five thousand, six hundred forty-two".