1245136479 has 8 divisors (see below), whose sum is σ = 1665109680. Its totient is φ = 827627136.

The previous prime is 1245136471. The next prime is 1245136499. The reversal of 1245136479 is 9746315421.

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

It is not a de Polignac number, because 1245136479 - 2³ = 1245136471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1245136479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245136471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614784 + ... + 616805.

It is an arithmetic number, because the mean of its divisors is an integer number (208138710).

Almost surely, 2^1245136479 is an apocalyptic number.

1245136479 is a deficient number, since it is larger than the sum of its proper divisors (419973201).

1245136479 is a wasteful number, since it uses less digits than its factorization.

1245136479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231929.

The product of its digits is 181440, while the sum is 42.

The square root of 1245136479 is about 35286.4914521124. The cubic root of 1245136479 is about 1075.8184440406.

The spelling of 1245136479 in words is "one billion, two hundred forty-five million, one hundred thirty-six thousand, four hundred seventy-nine".