420850279 has 2 divisors, whose sum is σ = 420850280. Its totient is φ = 420850278.

The previous prime is 420850273. The next prime is 420850333. The reversal of 420850279 is 972058024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420850279 - 2¹³ = 420842087 is a prime.

It is a super-2 number, since 2×420850279² = 354229914668755682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420850273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210425139 + 210425140.

It is an arithmetic number, because the mean of its divisors is an integer number (210425140).

Almost surely, 2^420850279 is an apocalyptic number.

420850279 is a deficient number, since it is larger than the sum of its proper divisors (1).

420850279 is an equidigital number, since it uses as much as digits as its factorization.

420850279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 420850279 is about 20514.6357267196. The cubic root of 420850279 is about 749.3922656041.

The spelling of 420850279 in words is "four hundred twenty million, eight hundred fifty thousand, two hundred seventy-nine".