213042420999 has 16 divisors (see below), whose sum is σ = 315922214400. Its totient is φ = 141891564888.

The previous prime is 213042420979. The next prime is 213042421061. The reversal of 213042420999 is 999024240312.

213042420999 is a `hidden beast` number, since 2 + 13 + 0 + 424 + 209 + 9 + 9 = 666.

It is not a de Polignac number, because 213042420999 - 2¹¹ = 213042418951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213042420959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3769089 + ... + 3825194.

It is an arithmetic number, because the mean of its divisors is an integer number (19745138400).

Almost surely, 2^213042420999 is an apocalyptic number.

213042420999 is a deficient number, since it is larger than the sum of its proper divisors (102879793401).

213042420999 is a wasteful number, since it uses less digits than its factorization.

213042420999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7595331 (or 7595325 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 213042420999 in words is "two hundred thirteen billion, forty-two million, four hundred twenty thousand, nine hundred ninety-nine".