420770269 has 4 divisors (see below), whose sum is σ = 421671744. Its totient is φ = 419868796.

The previous prime is 420770263. The next prime is 420770279. The reversal of 420770269 is 962077024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420770269 - 2³ = 420770261 is a prime.

It is a super-2 number, since 2×420770269² = 354095238548664722, 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 (420770261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450037 + ... + 450970.

It is an arithmetic number, because the mean of its divisors is an integer number (105417936).

Almost surely, 2^420770269 is an apocalyptic number.

It is an amenable number.

420770269 is a deficient number, since it is larger than the sum of its proper divisors (901475).

420770269 is an equidigital number, since it uses as much as digits as its factorization.

420770269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901474.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 420770269 is about 20512.6855628414. The cubic root of 420770269 is about 749.3447723282.

The spelling of 420770269 in words is "four hundred twenty million, seven hundred seventy thousand, two hundred sixty-nine".