420293 has 2 divisors, whose sum is σ = 420294. Its totient is φ = 420292.

The previous prime is 420271. The next prime is 420307. The reversal of 420293 is 392024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351649 + 68644 = 593^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 420293 - 2⁸ = 420037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210146 + 210147.

It is an arithmetic number, because the mean of its divisors is an integer number (210147).

2⁴²⁰²⁹³ is an apocalyptic number.

It is an amenable number.

420293 is a deficient number, since it is larger than the sum of its proper divisors (1).

420293 is an equidigital number, since it uses as much as digits as its factorization.

420293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 420293 is about 648.3000848373. The cubic root of 420293 is about 74.9061344242.

The spelling of 420293 in words is "four hundred twenty thousand, two hundred ninety-three".