420051145 has 16 divisors (see below), whose sum is σ = 533989440. Its totient is φ = 316315584.

The previous prime is 420051143. The next prime is 420051193. The reversal of 420051145 is 541150024.

It is a cyclic number.

It is not a de Polignac number, because 420051145 - 2¹ = 420051143 is a prime.

It is a super-2 number, since 2×420051145² = 352885928831622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420051143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834 + ... + 28996.

It is an arithmetic number, because the mean of its divisors is an integer number (33374340).

Almost surely, 2^420051145 is an apocalyptic number.

It is an amenable number.

420051145 is a deficient number, since it is larger than the sum of its proper divisors (113938295).

420051145 is a wasteful number, since it uses less digits than its factorization.

420051145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28344.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 420051145 is about 20495.1493041646. The cubic root of 420051145 is about 748.9176357720.

The spelling of 420051145 in words is "four hundred twenty million, fifty-one thousand, one hundred forty-five".