1273072479 has 48 divisors (see below), whose sum is σ = 2050139520. Its totient is φ = 699814080.

The previous prime is 1273072469. The next prime is 1273072483. The reversal of 1273072479 is 9742703721.

It is a happy number.

It is not a de Polignac number, because 1273072479 - 2⁸ = 1273072223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1273072479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273072459) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2229264 + ... + 2229834.

It is an arithmetic number, because the mean of its divisors is an integer number (42711240).

Almost surely, 2^1273072479 is an apocalyptic number.

1273072479 is a deficient number, since it is larger than the sum of its proper divisors (777067041).

1273072479 is a wasteful number, since it uses less digits than its factorization.

1273072479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 1273072479 is about 35680.1412413124. The cubic root of 1273072479 is about 1083.8047329975.

The spelling of 1273072479 in words is "one billion, two hundred seventy-three million, seventy-two thousand, four hundred seventy-nine".