420874999 has 8 divisors (see below), whose sum is σ = 454318560. Its totient is φ = 388693536.

The previous prime is 420874997. The next prime is 420875009. The reversal of 420874999 is 999478024.

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 420874999 - 2¹ = 420874997 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 (420874997) 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, 314832 + ... + 316165.

It is an arithmetic number, because the mean of its divisors is an integer number (56789820).

Almost surely, 2^420874999 is an apocalyptic number.

420874999 is a deficient number, since it is larger than the sum of its proper divisors (33443561).

420874999 is a wasteful number, since it uses less digits than its factorization.

420874999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631049.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 420874999 is about 20515.2382145565. The cubic root of 420874999 is about 749.4069379750.

The spelling of 420874999 in words is "four hundred twenty million, eight hundred seventy-four thousand, nine hundred ninety-nine".