136428423 has 8 divisors (see below), whose sum is σ = 183126000. Its totient is φ = 90341568.

The previous prime is 136428407. The next prime is 136428431. The reversal of 136428423 is 324824631.

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

It is not a de Polignac number, because 136428423 - 2⁴ = 136428407 is a prime.

It is a super-2 number, since 2×136428423² = 37225429204533858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136428323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152158 + ... + 153051.

It is an arithmetic number, because the mean of its divisors is an integer number (22890750).

Almost surely, 2^136428423 is an apocalyptic number.

136428423 is a deficient number, since it is larger than the sum of its proper divisors (46697577).

136428423 is a wasteful number, since it uses less digits than its factorization.

136428423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305361.

The product of its digits is 27648, while the sum is 33.

The square root of 136428423 is about 11680.2578310584. The cubic root of 136428423 is about 514.7957502174.

The spelling of 136428423 in words is "one hundred thirty-six million, four hundred twenty-eight thousand, four hundred twenty-three".