420115451 has 8 divisors (see below), whose sum is σ = 480759264. Its totient is φ = 359628480.

The previous prime is 420115433. The next prime is 420115477. The reversal of 420115451 is 154511024.

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 420115451 - 2¹⁰ = 420114427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420135451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33410 + ... + 44231.

It is an arithmetic number, because the mean of its divisors is an integer number (60094908).

Almost surely, 2^420115451 is an apocalyptic number.

420115451 is a deficient number, since it is larger than the sum of its proper divisors (60643813).

420115451 is an equidigital number, since it uses as much as digits as its factorization.

420115451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78421.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 420115451 is about 20496.7180543618. The cubic root of 420115451 is about 748.9558513089.

Adding to 420115451 its reverse (154511024), we get a palindrome (574626475).

The spelling of 420115451 in words is "four hundred twenty million, one hundred fifteen thousand, four hundred fifty-one".