421332293 has 2 divisors, whose sum is σ = 421332294. Its totient is φ = 421332292.

The previous prime is 421332251. The next prime is 421332311. The reversal of 421332293 is 392233124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382867489 + 38464804 = 19567^2 + 6202^2 .

It is a cyclic number.

It is not a de Polignac number, because 421332293 - 2¹⁶ = 421266757 is a prime.

It is a super-2 number, since 2×421332293² = 355041802249275698, which contains 22 as substring.

It is equal to p_22411577 and since 421332293 and 22411577 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421382293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210666146 + 210666147.

It is an arithmetic number, because the mean of its divisors is an integer number (210666147).

Almost surely, 2^421332293 is an apocalyptic number.

It is an amenable number.

421332293 is a deficient number, since it is larger than the sum of its proper divisors (1).

421332293 is an equidigital number, since it uses as much as digits as its factorization.

421332293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 421332293 is about 20526.3804164300. The cubic root of 421332293 is about 749.6782578476.

The spelling of 421332293 in words is "four hundred twenty-one million, three hundred thirty-two thousand, two hundred ninety-three".