420750999 has 6 divisors (see below), whose sum is σ = 607751456. Its totient is φ = 280500660.

The previous prime is 420750973. The next prime is 420751021. The reversal of 420750999 is 999057024.

It is not a de Polignac number, because 420750999 - 2⁷ = 420750871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420750929) 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 5 ways as a sum of consecutive naturals, for example, 23375047 + ... + 23375064.

Almost surely, 2^420750999 is an apocalyptic number.

420750999 is a deficient number, since it is larger than the sum of its proper divisors (187000457).

420750999 is a wasteful number, since it uses less digits than its factorization.

420750999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46750117 (or 46750114 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 420750999 is about 20512.2158481233. The cubic root of 420750999 is about 749.3333329156. Note that the first 5 decimals are identical.

The spelling of 420750999 in words is "four hundred twenty million, seven hundred fifty thousand, nine hundred ninety-nine".