421094137 has 2 divisors, whose sum is σ = 421094138. Its totient is φ = 421094136.

The previous prime is 421094083. The next prime is 421094159. The reversal of 421094137 is 731490124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288014841 + 133079296 = 16971^2 + 11536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421094137 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 421094099 and 421094108.

It is not a weakly prime, because it can be changed into another prime (421094537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210547068 + 210547069.

It is an arithmetic number, because the mean of its divisors is an integer number (210547069).

Almost surely, 2^421094137 is an apocalyptic number.

It is an amenable number.

421094137 is a deficient number, since it is larger than the sum of its proper divisors (1).

421094137 is an equidigital number, since it uses as much as digits as its factorization.

421094137 is an odious number, because the sum of its binary digits is odd.

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

The square root of 421094137 is about 20520.5783787884. The cubic root of 421094137 is about 749.5369805799.

The spelling of 421094137 in words is "four hundred twenty-one million, ninety-four thousand, one hundred thirty-seven".