420249311 has 2 divisors, whose sum is σ = 420249312. Its totient is φ = 420249310.

The previous prime is 420249301. The next prime is 420249329. The reversal of 420249311 is 113942024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420249311 - 2¹⁰ = 420248287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420249301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210124655 + 210124656.

It is an arithmetic number, because the mean of its divisors is an integer number (210124656).

Almost surely, 2^420249311 is an apocalyptic number.

420249311 is a deficient number, since it is larger than the sum of its proper divisors (1).

420249311 is an equidigital number, since it uses as much as digits as its factorization.

420249311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 420249311 is about 20499.9831951151. The cubic root of 420249311 is about 749.0353886392.

The spelling of 420249311 in words is "four hundred twenty million, two hundred forty-nine thousand, three hundred eleven".