1273242380 has 24 divisors (see below), whose sum is σ = 2693331648. Its totient is φ = 505578368.

The previous prime is 1273242359. The next prime is 1273242403. The reversal of 1273242380 is 832423721.

It is a super-2 number, since 2×1273242380² = 3242292316456128800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229604 + ... + 235083.

It is an arithmetic number, because the mean of its divisors is an integer number (112222152).

Almost surely, 2^1273242380 is an apocalyptic number.

1273242380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273242380 is an abundant number, since it is smaller than the sum of its proper divisors (1420089268).

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

1273242380 is a wasteful number, since it uses less digits than its factorization.

1273242380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464833 (or 464831 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1273242380 is about 35682.5220521196. The cubic root of 1273242380 is about 1083.8529447896.

The spelling of 1273242380 in words is "one billion, two hundred seventy-three million, two hundred forty-two thousand, three hundred eighty".