210142342 has 4 divisors (see below), whose sum is σ = 315213516. Its totient is φ = 105071170.

The previous prime is 210142319. The next prime is 210142349. The reversal of 210142342 is 243241012.

210142342 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210142349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52535584 + ... + 52535587.

It is an arithmetic number, because the mean of its divisors is an integer number (78803379).

Almost surely, 2^210142342 is an apocalyptic number.

210142342 is a deficient number, since it is larger than the sum of its proper divisors (105071174).

210142342 is a wasteful number, since it uses less digits than its factorization.

210142342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105071173.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 210142342 is about 14496.2871798264. The cubic root of 210142342 is about 594.5264617287.

Adding to 210142342 its reverse (243241012), we get a palindrome (453383354).

The spelling of 210142342 in words is "two hundred ten million, one hundred forty-two thousand, three hundred forty-two".