1040981 has 2 divisors, whose sum is σ = 1040982. Its totient is φ = 1040980.

The previous prime is 1040959. The next prime is 1040989. The reversal of 1040981 is 1890401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970225 + 70756 = 985^2 + 266^2 .

It is an emirp because it is prime and its reverse (1890401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040981 is a prime.

It is a super-2 number, since 2×1040981² = 2167282884722, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520490 + 520491.

It is an arithmetic number, because the mean of its divisors is an integer number (520491).

2^1040981 is an apocalyptic number.

It is an amenable number.

1040981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040981 is an equidigital number, since it uses as much as digits as its factorization.

1040981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1040981 is about 1020.2847641713. The cubic root of 1040981 is about 101.3477864407.

The spelling of 1040981 in words is "one million, forty thousand, nine hundred eighty-one".