1420999 has 2 divisors, whose sum is σ = 1421000. Its totient is φ = 1420998.

The previous prime is 1420981. The next prime is 1421011. The reversal of 1420999 is 9990241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1420999 - 2⁵ = 1420967 is a prime.

1420999 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710499 + 710500.

It is an arithmetic number, because the mean of its divisors is an integer number (710500).

2^1420999 is an apocalyptic number.

1420999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420999 is an equidigital number, since it uses as much as digits as its factorization.

1420999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1420999 is about 1192.0566261718. The cubic root of 1420999 is about 112.4254386599.

The spelling of 1420999 in words is "one million, four hundred twenty thousand, nine hundred ninety-nine".