212297142 has 16 divisors (see below), whose sum is σ = 424737072. Its totient is φ = 70741920.

The previous prime is 212297117. The next prime is 212297179. The reversal of 212297142 is 241792212.

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, 32148 + ... + 38184.

It is an arithmetic number, because the mean of its divisors is an integer number (26546067).

Almost surely, 2^212297142 is an apocalyptic number.

212297142 is an abundant number, since it is smaller than the sum of its proper divisors (212439930).

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

212297142 is a wasteful number, since it uses less digits than its factorization.

212297142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11903.

The product of its digits is 4032, while the sum is 30.

The square root of 212297142 is about 14570.4201037582. The cubic root of 212297142 is about 596.5516471833.

The spelling of 212297142 in words is "two hundred twelve million, two hundred ninety-seven thousand, one hundred forty-two".