420660255 has 8 divisors (see below), whose sum is σ = 673056432. Its totient is φ = 224352128.

The previous prime is 420660239. The next prime is 420660259. The reversal of 420660255 is 552066024.

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 420660255 - 2⁴ = 420660239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420660259) 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 7 ways as a sum of consecutive naturals, for example, 14021994 + ... + 14022023.

It is an arithmetic number, because the mean of its divisors is an integer number (84132054).

Almost surely, 2^420660255 is an apocalyptic number.

420660255 is a deficient number, since it is larger than the sum of its proper divisors (252396177).

420660255 is a wasteful number, since it uses less digits than its factorization.

420660255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28044025.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 420660255 is about 20510.0037786442. The cubic root of 420660255 is about 749.2794590939.

It can be divided in two parts, 420 and 660255, that added together give a triangular number (660675 = T₁₁₄₉).

The spelling of 420660255 in words is "four hundred twenty million, six hundred sixty thousand, two hundred fifty-five".