1297422980 has 144 divisors (see below), whose sum is σ = 3395649600. Its totient is φ = 413925120.

The previous prime is 1297422913. The next prime is 1297422991. The reversal of 1297422980 is 892247921.

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 47 ways as a sum of consecutive naturals, for example, 1097990 + ... + 1099170.

It is an arithmetic number, because the mean of its divisors is an integer number (23580900).

Almost surely, 2^1297422980 is an apocalyptic number.

1297422980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297422980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1697824800).

1297422980 is an abundant number, since it is smaller than the sum of its proper divisors (2098226620).

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

1297422980 is a wasteful number, since it uses less digits than its factorization.

1297422980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1273 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1297422980 is about 36019.7581890828. The cubic root of 1297422980 is about 1090.6712415760.

The spelling of 1297422980 in words is "one billion, two hundred ninety-seven million, four hundred twenty-two thousand, nine hundred eighty".