1421397113 has 2 divisors, whose sum is σ = 1421397114. Its totient is φ = 1421397112.

The previous prime is 1421397083. The next prime is 1421397127. The reversal of 1421397113 is 3117931241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1396666384 + 24730729 = 37372^2 + 4973^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421397113 - 2⁸ = 1421396857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421397113.

It is not a weakly prime, because it can be changed into another prime (1426397113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710698556 + 710698557.

It is an arithmetic number, because the mean of its divisors is an integer number (710698557).

Almost surely, 2^1421397113 is an apocalyptic number.

It is an amenable number.

1421397113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421397113 is an equidigital number, since it uses as much as digits as its factorization.

1421397113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 1421397113 is about 37701.4205700528. The cubic root of 1421397113 is about 1124.3593687268.

The spelling of 1421397113 in words is "one billion, four hundred twenty-one million, three hundred ninety-seven thousand, one hundred thirteen".