1040556371 has 2 divisors, whose sum is σ = 1040556372. Its totient is φ = 1040556370.

The previous prime is 1040556353. The next prime is 1040556373. The reversal of 1040556371 is 1736550401.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040556371 is a prime.

It is a super-2 number, since 2×1040556371² = 2165515122457379282, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1040556373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1040556373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520278185 + 520278186.

It is an arithmetic number, because the mean of its divisors is an integer number (520278186).

Almost surely, 2^1040556371 is an apocalyptic number.

1040556371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040556371 is an equidigital number, since it uses as much as digits as its factorization.

1040556371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1040556371 is about 32257.6560059779. The cubic root of 1040556371 is about 1013.3400422883.

The spelling of 1040556371 in words is "one billion, forty million, five hundred fifty-six thousand, three hundred seventy-one".