420299357 has 2 divisors, whose sum is σ = 420299358. Its totient is φ = 420299356.

The previous prime is 420299293. The next prime is 420299377. The reversal of 420299357 is 753992024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365153881 + 55145476 = 19109^2 + 7426^2 .

It is a cyclic number.

It is not a de Polignac number, because 420299357 - 2⁶ = 420299293 is a prime.

It is a super-2 number, since 2×420299357² = 353303098989226898, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420299377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210149678 + 210149679.

It is an arithmetic number, because the mean of its divisors is an integer number (210149679).

Almost surely, 2^420299357 is an apocalyptic number.

It is an amenable number.

420299357 is a deficient number, since it is larger than the sum of its proper divisors (1).

420299357 is an equidigital number, since it uses as much as digits as its factorization.

420299357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 420299357 is about 20501.2037939239. The cubic root of 420299357 is about 749.0651207816.

The spelling of 420299357 in words is "four hundred twenty million, two hundred ninety-nine thousand, three hundred fifty-seven".