420454165 has 8 divisors (see below), whose sum is σ = 507081600. Its totient is φ = 334672272.

The previous prime is 420454159. The next prime is 420454169. The reversal of 420454165 is 561454024.

It is a happy number.

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 420454165 - 2⁹ = 420453653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420454169) 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, 210289 + ... + 212278.

It is an arithmetic number, because the mean of its divisors is an integer number (63385200).

Almost surely, 2^420454165 is an apocalyptic number.

It is an amenable number.

420454165 is a deficient number, since it is larger than the sum of its proper divisors (86627435).

420454165 is a wasteful number, since it uses less digits than its factorization.

420454165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422771.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 420454165 is about 20504.9790294943. The cubic root of 420454165 is about 749.1570766990.

The spelling of 420454165 in words is "four hundred twenty million, four hundred fifty-four thousand, one hundred sixty-five".