136245407 has 4 divisors (see below), whose sum is σ = 136269000. Its totient is φ = 136221816.

The previous prime is 136245367. The next prime is 136245427. The reversal of 136245407 is 704542631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 704542631 = 13 ⋅54195587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136245407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136245427) 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, 3344 + ... + 16842.

It is an arithmetic number, because the mean of its divisors is an integer number (34067250).

Almost surely, 2^136245407 is an apocalyptic number.

136245407 is a deficient number, since it is larger than the sum of its proper divisors (23593).

136245407 is a wasteful number, since it uses less digits than its factorization.

136245407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23592.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 136245407 is about 11672.4207857668. The cubic root of 136245407 is about 514.5654511396.

The spelling of 136245407 in words is "one hundred thirty-six million, two hundred forty-five thousand, four hundred seven".