1273256424 has 192 divisors, whose sum is σ = 3989606400. Its totient is φ = 362793600.

The previous prime is 1273256401. The next prime is 1273256431. The reversal of 1273256424 is 4246523721.

1273256424 is a `hidden beast` number, since 1 + 2 + 7 + 3 + 2 + 5 + 642 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2873947 + ... + 2874389.

It is an arithmetic number, because the mean of its divisors is an integer number (20779200).

Almost surely, 2^1273256424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273256424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1994803200).

1273256424 is an abundant number, since it is smaller than the sum of its proper divisors (2716349976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1273256424 is a wasteful number, since it uses less digits than its factorization.

1273256424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 669 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 1273256424 is about 35682.7188425994. The cubic root of 1273256424 is about 1083.8569297796.

The spelling of 1273256424 in words is "one billion, two hundred seventy-three million, two hundred fifty-six thousand, four hundred twenty-four".