1273007401 has 4 divisors (see below), whose sum is σ = 1304056404. Its totient is φ = 1241958400.

The previous prime is 1273007399. The next prime is 1273007431. The reversal of 1273007401 is 1047003721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91298025 + 1181709376 = 9555^2 + 34376^2 .

It is a cyclic number.

It is not a de Polignac number, because 1273007401 - 2¹ = 1273007399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273007431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15524440 + ... + 15524521.

It is an arithmetic number, because the mean of its divisors is an integer number (326014101).

Almost surely, 2^1273007401 is an apocalyptic number.

It is an amenable number.

1273007401 is a deficient number, since it is larger than the sum of its proper divisors (31049003).

1273007401 is an equidigital number, since it uses as much as digits as its factorization.

1273007401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31049002.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 1273007401 is about 35679.2292657787. The cubic root of 1273007401 is about 1083.7862650659.

The spelling of 1273007401 in words is "one billion, two hundred seventy-three million, seven thousand, four hundred one".