136429247 has 4 divisors (see below), whose sum is σ = 136503360. Its totient is φ = 136355136.

The previous prime is 136429231. The next prime is 136429283. The reversal of 136429247 is 742924631.

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

It is a cyclic number.

It is not a de Polignac number, because 136429247 - 2⁴ = 136429231 is a prime.

It is a super-2 number, since 2×136429247² = 37225878873974018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136429247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136423247) 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, 34223 + ... + 38000.

It is an arithmetic number, because the mean of its divisors is an integer number (34125840).

Almost surely, 2^136429247 is an apocalyptic number.

136429247 is a deficient number, since it is larger than the sum of its proper divisors (74113).

136429247 is an equidigital number, since it uses as much as digits as its factorization.

136429247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74112.

The product of its digits is 72576, while the sum is 38.

The square root of 136429247 is about 11680.2931041991. The cubic root of 136429247 is about 514.7967866360.

The spelling of 136429247 in words is "one hundred thirty-six million, four hundred twenty-nine thousand, two hundred forty-seven".