136402023 has 16 divisors (see below), whose sum is σ = 185038560. Its totient is φ = 89362944.

The previous prime is 136402009. The next prime is 136402027. The reversal of 136402023 is 320204631.

It is a happy number.

It is not a de Polignac number, because 136402023 - 2⁶ = 136401959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136402027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44715 + ... + 47667.

It is an arithmetic number, because the mean of its divisors is an integer number (11564910).

Almost surely, 2^136402023 is an apocalyptic number.

136402023 is a deficient number, since it is larger than the sum of its proper divisors (48636537).

136402023 is a wasteful number, since it uses less digits than its factorization.

136402023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 136402023 is about 11679.1276643421. The cubic root of 136402023 is about 514.7625423657.

Adding to 136402023 its reverse (320204631), we get a palindrome (456606654).

The spelling of 136402023 in words is "one hundred thirty-six million, four hundred two thousand, twenty-three".