421950611 has 2 divisors, whose sum is σ = 421950612. Its totient is φ = 421950610.

The previous prime is 421950589. The next prime is 421950619. The reversal of 421950611 is 116059124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421950611 is a prime.

It is not a weakly prime, because it can be changed into another prime (421950619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210975305 + 210975306.

It is an arithmetic number, because the mean of its divisors is an integer number (210975306).

Almost surely, 2^421950611 is an apocalyptic number.

421950611 is a deficient number, since it is larger than the sum of its proper divisors (1).

421950611 is an equidigital number, since it uses as much as digits as its factorization.

421950611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 421950611 is about 20541.4364395482. The cubic root of 421950611 is about 750.0448038420.

The spelling of 421950611 in words is "four hundred twenty-one million, nine hundred fifty thousand, six hundred eleven".