420670269 has 12 divisors (see below), whose sum is σ = 607828156. Its totient is φ = 280357632.

The previous prime is 420670267. The next prime is 420670297. The reversal of 420670269 is 962076024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64593369 + 356076900 = 8037^2 + 18870^2 .

It is not a de Polignac number, because 420670269 - 2¹ = 420670267 is a prime.

It is a super-2 number, since 2×420670269² = 353926950441064722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420670267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35439 + ... + 45795.

Almost surely, 2^420670269 is an apocalyptic number.

It is an amenable number.

420670269 is a deficient number, since it is larger than the sum of its proper divisors (187157887).

420670269 is a wasteful number, since it uses less digits than its factorization.

420670269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14876 (or 14873 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 420670269 is about 20510.2479019635. The cubic root of 420670269 is about 749.2854046876.

The spelling of 420670269 in words is "four hundred twenty million, six hundred seventy thousand, two hundred sixty-nine".