1420291 has 2 divisors, whose sum is σ = 1420292. Its totient is φ = 1420290.

The previous prime is 1420283. The next prime is 1420301. The reversal of 1420291 is 1920241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420291 - 2³ = 1420283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710145 + 710146.

It is an arithmetic number, because the mean of its divisors is an integer number (710146).

2^1420291 is an apocalyptic number.

1420291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420291 is an equidigital number, since it uses as much as digits as its factorization.

1420291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1420291 is about 1191.7596234141. The cubic root of 1420291 is about 112.4067639028.

It can be divided in two parts, 1420 and 291, that added together give a triangular number (1711 = T₅₈).

The spelling of 1420291 in words is "one million, four hundred twenty thousand, two hundred ninety-one".