1420919 has 2 divisors, whose sum is σ = 1420920. Its totient is φ = 1420918.

The previous prime is 1420901. The next prime is 1420921. The reversal of 1420919 is 9190241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420919 is a prime.

It is a super-2 number, since 2×1420919² = 4038021609122, which contains 22 as substring.

Together with 1420921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710459 + 710460.

It is an arithmetic number, because the mean of its divisors is an integer number (710460).

2^1420919 is an apocalyptic number.

1420919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420919 is an equidigital number, since it uses as much as digits as its factorization.

1420919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1420919 is about 1192.0230702465. The cubic root of 1420919 is about 112.4233288288.

The spelling of 1420919 in words is "one million, four hundred twenty thousand, nine hundred nineteen".