212320142 has 16 divisors (see below), whose sum is σ = 322987392. Its totient is φ = 104663160.

The previous prime is 212320127. The next prime is 212320151. The reversal of 212320142 is 241023212.

It is a self number, because there is not a number n which added to its sum of digits gives 212320142.

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, 103733 + ... + 105759.

It is an arithmetic number, because the mean of its divisors is an integer number (20186712).

Almost surely, 2^212320142 is an apocalyptic number.

212320142 is a deficient number, since it is larger than the sum of its proper divisors (110667250).

212320142 is a wasteful number, since it uses less digits than its factorization.

212320142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212320142 is about 14571.2093526927. The cubic root of 212320142 is about 596.5731896187.

Adding to 212320142 its reverse (241023212), we get a palindrome (453343354).

The spelling of 212320142 in words is "two hundred twelve million, three hundred twenty thousand, one hundred forty-two".