420545449 has 8 divisors (see below), whose sum is σ = 442974240. Its totient is φ = 398146176.

The previous prime is 420545431. The next prime is 420545453. The reversal of 420545449 is 944545024.

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 420545449 - 2¹⁵ = 420512681 is a prime.

It is a super-2 number, since 2×420545449² = 353716949349223202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420545429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25722 + ... + 38764.

It is an arithmetic number, because the mean of its divisors is an integer number (55371780).

Almost surely, 2^420545449 is an apocalyptic number.

It is an amenable number.

420545449 is a deficient number, since it is larger than the sum of its proper divisors (22428791).

420545449 is a wasteful number, since it uses less digits than its factorization.

420545449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14759.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 420545449 is about 20507.2048070916. The cubic root of 420545449 is about 749.2112887962.

The spelling of 420545449 in words is "four hundred twenty million, five hundred forty-five thousand, four hundred forty-nine".