420684151 has 2 divisors, whose sum is σ = 420684152. Its totient is φ = 420684150.

The previous prime is 420684139. The next prime is 420684203. The reversal of 420684151 is 151486024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420684151 - 2¹⁷ = 420553079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420685151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210342075 + 210342076.

It is an arithmetic number, because the mean of its divisors is an integer number (210342076).

Almost surely, 2^420684151 is an apocalyptic number.

420684151 is a deficient number, since it is larger than the sum of its proper divisors (1).

420684151 is an equidigital number, since it uses as much as digits as its factorization.

420684151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 420684151 is about 20510.5863153641. The cubic root of 420684151 is about 749.2936466658.

The spelling of 420684151 in words is "four hundred twenty million, six hundred eighty-four thousand, one hundred fifty-one".