420351293 has 2 divisors, whose sum is σ = 420351294. Its totient is φ = 420351292.

The previous prime is 420351251. The next prime is 420351353. The reversal of 420351293 is 392153024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414407449 + 5943844 = 20357^2 + 2438^2 .

It is a cyclic number.

It is not a de Polignac number, because 420351293 - 2⁸ = 420351037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420351203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210175646 + 210175647.

It is an arithmetic number, because the mean of its divisors is an integer number (210175647).

Almost surely, 2^420351293 is an apocalyptic number.

It is an amenable number.

420351293 is a deficient number, since it is larger than the sum of its proper divisors (1).

420351293 is an equidigital number, since it uses as much as digits as its factorization.

420351293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 420351293 is about 20502.4704121235. The cubic root of 420351293 is about 749.0959732706.

The spelling of 420351293 in words is "four hundred twenty million, three hundred fifty-one thousand, two hundred ninety-three".