420256210 has 16 divisors (see below), whose sum is σ = 825230592. Its totient is φ = 152820400.

The previous prime is 420256183. The next prime is 420256237. The reversal of 420256210 is 12652024.

It is an interprime number because it is at equal distance from previous prime (420256183) and next prime (420256237).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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, 1910146 + ... + 1910365.

It is an arithmetic number, because the mean of its divisors is an integer number (51576912).

Almost surely, 2^420256210 is an apocalyptic number.

420256210 is a deficient number, since it is larger than the sum of its proper divisors (404974382).

420256210 is a wasteful number, since it uses less digits than its factorization.

420256210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820529.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 420256210 is about 20500.1514628551. The cubic root of 420256210 is about 749.0394874497.

The spelling of 420256210 in words is "four hundred twenty million, two hundred fifty-six thousand, two hundred ten".