1420115491 has 2 divisors, whose sum is σ = 1420115492. Its totient is φ = 1420115490.

The previous prime is 1420115467. The next prime is 1420115497. The reversal of 1420115491 is 1945110241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1420115491 - 2⁹ = 1420114979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420115497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710057745 + 710057746.

It is an arithmetic number, because the mean of its divisors is an integer number (710057746).

Almost surely, 2^1420115491 is an apocalyptic number.

1420115491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420115491 is an equidigital number, since it uses as much as digits as its factorization.

1420115491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1420115491 is about 37684.4197381358. The cubic root of 1420115491 is about 1124.0213358137.

It can be divided in two parts, 14201 and 15491, that added together give a palindrome (29692).

The spelling of 1420115491 in words is "one billion, four hundred twenty million, one hundred fifteen thousand, four hundred ninety-one".