420161743 has 2 divisors, whose sum is σ = 420161744. Its totient is φ = 420161742.

The previous prime is 420161719. The next prime is 420161759. The reversal of 420161743 is 347161024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420161743 - 2⁵ = 420161711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420161713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210080871 + 210080872.

It is an arithmetic number, because the mean of its divisors is an integer number (210080872).

Almost surely, 2^420161743 is an apocalyptic number.

420161743 is a deficient number, since it is larger than the sum of its proper divisors (1).

420161743 is an equidigital number, since it uses as much as digits as its factorization.

420161743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 420161743 is about 20497.8472772143. The cubic root of 420161743 is about 748.9833591371.

The spelling of 420161743 in words is "four hundred twenty million, one hundred sixty-one thousand, seven hundred forty-three".