421986151 has 2 divisors, whose sum is σ = 421986152. Its totient is φ = 421986150.

The previous prime is 421986137. The next prime is 421986179. The reversal of 421986151 is 151689124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421986151 - 2⁵ = 421986119 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421986151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421986251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210993075 + 210993076.

It is an arithmetic number, because the mean of its divisors is an integer number (210993076).

Almost surely, 2^421986151 is an apocalyptic number.

421986151 is a deficient number, since it is larger than the sum of its proper divisors (1).

421986151 is an equidigital number, since it uses as much as digits as its factorization.

421986151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 37.

The square root of 421986151 is about 20542.3015020226. The cubic root of 421986151 is about 750.0658614754.

The spelling of 421986151 in words is "four hundred twenty-one million, nine hundred eighty-six thousand, one hundred fifty-one".