136421306 has 16 divisors (see below), whose sum is σ = 236183040. Its totient is φ = 57886800.

The previous prime is 136421293. The next prime is 136421321. The reversal of 136421306 is 603124631.

136421306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×136421306² = 37221545461491272, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46826 + ... + 49653.

It is an arithmetic number, because the mean of its divisors is an integer number (14761440).

Almost surely, 2^136421306 is an apocalyptic number.

136421306 is a deficient number, since it is larger than the sum of its proper divisors (99761734).

136421306 is a wasteful number, since it uses less digits than its factorization.

136421306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96589.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 136421306 is about 11679.9531677143. The cubic root of 136421306 is about 514.7867983559.

Adding to 136421306 its reverse (603124631), we get a palindrome (739545937).

The spelling of 136421306 in words is "one hundred thirty-six million, four hundred twenty-one thousand, three hundred six".