210342342 has 16 divisors (see below), whose sum is σ = 480782592. Its totient is φ = 60097800.

The previous prime is 210342329. The next prime is 210342361. The reversal of 210342342 is 243243012.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504034 + ... + 2504117.

It is an arithmetic number, because the mean of its divisors is an integer number (30048912).

Almost surely, 2^210342342 is an apocalyptic number.

210342342 is an abundant number, since it is smaller than the sum of its proper divisors (270440250).

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

210342342 is a wasteful number, since it uses less digits than its factorization.

210342342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008163.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 210342342 is about 14503.1838573466. The cubic root of 210342342 is about 594.7150126398.

Adding to 210342342 its reverse (243243012), we get a palindrome (453585354).

The spelling of 210342342 in words is "two hundred ten million, three hundred forty-two thousand, three hundred forty-two".