1290980 has 24 divisors (see below), whose sum is σ = 2871288. Its totient is φ = 485888.

The previous prime is 1290937. The next prime is 1290983. The reversal of 1290980 is 890921.

It can be written as a sum of positive squares in 4 ways, for example, as 23104 + 1267876 = 152^2 + 1126^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559 + ... + 2238.

It is an arithmetic number, because the mean of its divisors is an integer number (119637).

2^1290980 is an apocalyptic number.

1290980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1290980 is an abundant number, since it is smaller than the sum of its proper divisors (1580308).

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

1290980 is a wasteful number, since it uses less digits than its factorization.

1290980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3821 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1290980 is about 1136.2130081987. The cubic root of 1290980 is about 108.8862826593.

The spelling of 1290980 in words is "one million, two hundred ninety thousand, nine hundred eighty".