420743369 has 8 divisors (see below), whose sum is σ = 425934600. Its totient is φ = 415584000.

The previous prime is 420743363. The next prime is 420743371. The reversal of 420743369 is 963347024.

It can be written as a sum of positive squares in 4 ways, for example, as 4787344 + 415956025 = 2188^2 + 20395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420743369 - 2¹⁶ = 420677833 is a prime.

It is a super-2 number, since 2×420743369² = 354049965114940322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420743363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19169 + ... + 34769.

It is an arithmetic number, because the mean of its divisors is an integer number (53241825).

Almost surely, 2^420743369 is an apocalyptic number.

It is an amenable number.

420743369 is a deficient number, since it is larger than the sum of its proper divisors (5191231).

420743369 is a wasteful number, since it uses less digits than its factorization.

420743369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15931.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 420743369 is about 20512.0298605477. The cubic root of 420743369 is about 749.3288033578.

The spelling of 420743369 in words is "four hundred twenty million, seven hundred forty-three thousand, three hundred sixty-nine".