1420039 has 2 divisors, whose sum is σ = 1420040. Its totient is φ = 1420038.

The previous prime is 1420037. The next prime is 1420057. The reversal of 1420039 is 9300241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420039 - 2¹ = 1420037 is a prime.

Together with 1420037, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1419998 and 1420025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710019 + 710020.

It is an arithmetic number, because the mean of its divisors is an integer number (710020).

2^1420039 is an apocalyptic number.

1420039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420039 is an equidigital number, since it uses as much as digits as its factorization.

1420039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1420039 is about 1191.6538927054. The cubic root of 1420039 is about 112.4001154577.

The spelling of 1420039 in words is "one million, four hundred twenty thousand, thirty-nine".