1245254479 has 16 divisors (see below), whose sum is σ = 1434101760. Its totient is φ = 1059173280.

The previous prime is 1245254473. The next prime is 1245254497. The reversal of 1245254479 is 9744525421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245254479 is a prime.

It is a super-2 number, since 2×1245254479² = 3101317434939122882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245254473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864642 + ... + 866080.

It is an arithmetic number, because the mean of its divisors is an integer number (89631360).

Almost surely, 2^1245254479 is an apocalyptic number.

1245254479 is a deficient number, since it is larger than the sum of its proper divisors (188847281).

1245254479 is a wasteful number, since it uses less digits than its factorization.

1245254479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310.

The product of its digits is 403200, while the sum is 43.

The square root of 1245254479 is about 35288.1634404512. The cubic root of 1245254479 is about 1075.8524276156.

The spelling of 1245254479 in words is "one billion, two hundred forty-five million, two hundred fifty-four thousand, four hundred seventy-nine".