210396042 has 40 divisors (see below), whose sum is σ = 491949216. Its totient is φ = 67081608.

The previous prime is 210396031. The next prime is 210396059. The reversal of 210396042 is 240693012.

210396042 is a `hidden beast` number, since 21 + 0 + 39 + 604 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 210395997 and 210396015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24508 + ... + 31959.

Almost surely, 2^210396042 is an apocalyptic number.

210396042 is an abundant number, since it is smaller than the sum of its proper divisors (281553174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210396042 is a wasteful number, since it uses less digits than its factorization.

210396042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56504 (or 56495 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 210396042 is about 14505.0350568346. The cubic root of 210396042 is about 594.7656182042.

The spelling of 210396042 in words is "two hundred ten million, three hundred ninety-six thousand, forty-two".