1276253140429 has 4 divisors (see below), whose sum is σ = 1276301966076. Its totient is φ = 1276204314784.

The previous prime is 1276253140411. The next prime is 1276253140451. The reversal of 1276253140429 is 9240413526721.

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 404111947204 + 872141193225 = 635698^2 + 933885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1276253140429 - 2⁷ = 1276253140301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276253146429) 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, 24373594 + ... + 24425899.

It is an arithmetic number, because the mean of its divisors is an integer number (319075491519).

Almost surely, 2^{1276253140429} is an apocalyptic number.

It is an amenable number.

1276253140429 is a deficient number, since it is larger than the sum of its proper divisors (48825647).

1276253140429 is an equidigital number, since it uses as much as digits as its factorization.

1276253140429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48825646.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 1276253140429 in words is "one trillion, two hundred seventy-six billion, two hundred fifty-three million, one hundred forty thousand, four hundred twenty-nine".