420412665 has 8 divisors (see below), whose sum is σ = 672660288. Its totient is φ = 224220080.

The previous prime is 420412651. The next prime is 420412693. The reversal of 420412665 is 566214024.

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

It is not a de Polignac number, because 420412665 - 2⁴ = 420412649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14013741 + ... + 14013770.

It is an arithmetic number, because the mean of its divisors is an integer number (84082536).

Almost surely, 2^420412665 is an apocalyptic number.

It is an amenable number.

420412665 is a deficient number, since it is larger than the sum of its proper divisors (252247623).

420412665 is a wasteful number, since it uses less digits than its factorization.

420412665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28027519.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 420412665 is about 20503.9670551823. The cubic root of 420412665 is about 749.1324279230.

Adding to 420412665 its reverse (566214024), we get a palindrome (986626689).

The spelling of 420412665 in words is "four hundred twenty million, four hundred twelve thousand, six hundred sixty-five".