1420931 has 2 divisors, whose sum is σ = 1420932. Its totient is φ = 1420930.

The previous prime is 1420921. The next prime is 1420933. The reversal of 1420931 is 1390241.

It is a strong prime.

It is an emirp because it is prime and its reverse (1390241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1420931 - 2¹⁴ = 1404547 is a prime.

It is a super-2 number, since 2×1420931² = 4038089813522, which contains 22 as substring.

Together with 1420933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1420933) 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, 710465 + 710466.

It is an arithmetic number, because the mean of its divisors is an integer number (710466).

2^1420931 is an apocalyptic number.

1420931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420931 is an equidigital number, since it uses as much as digits as its factorization.

1420931 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 20.

The square root of 1420931 is about 1192.0281036955. The cubic root of 1420931 is about 112.4236453085.

The spelling of 1420931 in words is "one million, four hundred twenty thousand, nine hundred thirty-one".