1273343980 has 12 divisors (see below), whose sum is σ = 2674022400. Its totient is φ = 509337584.

The previous prime is 1273343971. The next prime is 1273343983. The reversal of 1273343980 is 893433721.

It is not an unprimeable number, because it can be changed into a prime (1273343983) 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, 31833580 + ... + 31833619.

It is an arithmetic number, because the mean of its divisors is an integer number (222835200).

Almost surely, 2^1273343980 is an apocalyptic number.

1273343980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273343980 is an abundant number, since it is smaller than the sum of its proper divisors (1400678420).

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

1273343980 is a wasteful number, since it uses less digits than its factorization.

1273343980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63667208 (or 63667206 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 1273343980 is about 35683.9456899037. The cubic root of 1273343980 is about 1083.8817731656.

The spelling of 1273343980 in words is "one billion, two hundred seventy-three million, three hundred forty-three thousand, nine hundred eighty".