902670421 has 2 divisors, whose sum is σ = 902670422. Its totient is φ = 902670420.

The previous prime is 902670367. The next prime is 902670451. The reversal of 902670421 is 124076209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 696432100 + 206238321 = 26390^2 + 14361^2 .

It is a cyclic number.

It is not a de Polignac number, because 902670421 - 2⁹ = 902669909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (902670451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451335210 + 451335211.

It is an arithmetic number, because the mean of its divisors is an integer number (451335211).

Almost surely, 2^902670421 is an apocalyptic number.

It is an amenable number.

902670421 is a deficient number, since it is larger than the sum of its proper divisors (1).

902670421 is an equidigital number, since it uses as much as digits as its factorization.

902670421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 902670421 is about 30044.4740509798. The cubic root of 902670421 is about 966.4433539780.

The spelling of 902670421 in words is "nine hundred two million, six hundred seventy thousand, four hundred twenty-one".