1420090237 has 2 divisors, whose sum is σ = 1420090238. Its totient is φ = 1420090236.

The previous prime is 1420090181. The next prime is 1420090271. The reversal of 1420090237 is 7320900241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 735168996 + 684921241 = 27114^2 + 26171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420090237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420090297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710045118 + 710045119.

It is an arithmetic number, because the mean of its divisors is an integer number (710045119).

Almost surely, 2^1420090237 is an apocalyptic number.

It is an amenable number.

1420090237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420090237 is an equidigital number, since it uses as much as digits as its factorization.

1420090237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1420090237 is about 37684.0846644840. The cubic root of 1420090237 is about 1124.0146729277.

Adding to 1420090237 its reverse (7320900241), we get a palindrome (8740990478).

The spelling of 1420090237 in words is "one billion, four hundred twenty million, ninety thousand, two hundred thirty-seven".