420212269 has 2 divisors, whose sum is σ = 420212270. Its totient is φ = 420212268.

The previous prime is 420212257. The next prime is 420212279. The reversal of 420212269 is 962212024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314636644 + 105575625 = 17738^2 + 10275^2 .

It is a cyclic number.

It is not a de Polignac number, because 420212269 - 2¹⁹ = 419687981 is a prime.

It is a super-2 number, since 2×420212269² = 353156702036256722, 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 (420212279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210106134 + 210106135.

It is an arithmetic number, because the mean of its divisors is an integer number (210106135).

Almost surely, 2^420212269 is an apocalyptic number.

It is an amenable number.

420212269 is a deficient number, since it is larger than the sum of its proper divisors (1).

420212269 is an equidigital number, since it uses as much as digits as its factorization.

420212269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 420212269 is about 20499.0797110504. The cubic root of 420212269 is about 749.0133806046.

It can be divided in two parts, 4202 and 12269, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 420212269 in words is "four hundred twenty million, two hundred twelve thousand, two hundred sixty-nine".