421793107 has 2 divisors, whose sum is σ = 421793108. Its totient is φ = 421793106.

The previous prime is 421793033. The next prime is 421793129. The reversal of 421793107 is 701397124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421793107 is a prime.

It is a super-2 number, since 2×421793107² = 355818850225426898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421793167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210896553 + 210896554.

It is an arithmetic number, because the mean of its divisors is an integer number (210896554).

Almost surely, 2^421793107 is an apocalyptic number.

421793107 is a deficient number, since it is larger than the sum of its proper divisors (1).

421793107 is an equidigital number, since it uses as much as digits as its factorization.

421793107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 421793107 is about 20537.6022699827. The cubic root of 421793107 is about 749.9514676744.

The spelling of 421793107 in words is "four hundred twenty-one million, seven hundred ninety-three thousand, one hundred seven".