420044651 has 8 divisors (see below), whose sum is σ = 454251840. Its totient is φ = 386108352.

The previous prime is 420044587. The next prime is 420044707. The reversal of 420044651 is 156440024.

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 420044651 - 2⁶ = 420044587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420044651.

It is not an unprimeable number, because it can be changed into a prime (420044351) 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, 64490 + ... + 70703.

It is an arithmetic number, because the mean of its divisors is an integer number (56781480).

Almost surely, 2^420044651 is an apocalyptic number.

420044651 is a deficient number, since it is larger than the sum of its proper divisors (34207189).

420044651 is a wasteful number, since it uses less digits than its factorization.

420044651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135445.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 420044651 is about 20494.9908758213. The cubic root of 420044651 is about 748.9137763244.

Adding to 420044651 its reverse (156440024), we get a palindrome (576484675).

The spelling of 420044651 in words is "four hundred twenty million, forty-four thousand, six hundred fifty-one".