1420252291 has 2 divisors, whose sum is σ = 1420252292. Its totient is φ = 1420252290.

The previous prime is 1420252213. The next prime is 1420252313. The reversal of 1420252291 is 1922520241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1420252291 - 2⁹ = 1420251779 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420252991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710126145 + 710126146.

It is an arithmetic number, because the mean of its divisors is an integer number (710126146).

Almost surely, 2^1420252291 is an apocalyptic number.

1420252291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420252291 is an equidigital number, since it uses as much as digits as its factorization.

1420252291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1420252291 is about 37686.2347681484. The cubic root of 1420252291 is about 1124.0574270524.

The spelling of 1420252291 in words is "one billion, four hundred twenty million, two hundred fifty-two thousand, two hundred ninety-one".