1273499345 has 8 divisors (see below), whose sum is σ = 1528657920. Its totient is φ = 1018493680.

The previous prime is 1273499321. The next prime is 1273499371. The reversal of 1273499345 is 5439943721.

It is a happy number.

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

It is not a de Polignac number, because 1273499345 - 2²² = 1269305041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1273499345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19025 + ... + 53934.

It is an arithmetic number, because the mean of its divisors is an integer number (191082240).

Almost surely, 2^1273499345 is an apocalyptic number.

It is an amenable number.

1273499345 is a deficient number, since it is larger than the sum of its proper divisors (255158575).

1273499345 is an equidigital number, since it uses as much as digits as its factorization.

1273499345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76455.

The product of its digits is 816480, while the sum is 47.

The square root of 1273499345 is about 35686.1225828753. The cubic root of 1273499345 is about 1083.9258540649.

The spelling of 1273499345 in words is "one billion, two hundred seventy-three million, four hundred ninety-nine thousand, three hundred forty-five".