212442042 has 32 divisors (see below), whose sum is σ = 429732864. Its totient is φ = 70011200.

The previous prime is 212442037. The next prime is 212442071. The reversal of 212442042 is 240244212.

212442042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225292 + ... + 226232.

It is an arithmetic number, because the mean of its divisors is an integer number (13429152).

Almost surely, 2^212442042 is an apocalyptic number.

212442042 is an abundant number, since it is smaller than the sum of its proper divisors (217290822).

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

212442042 is a wasteful number, since it uses less digits than its factorization.

212442042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 212442042 is about 14575.3916585456. The cubic root of 212442042 is about 596.6873385609.

Adding to 212442042 its reverse (240244212), we get a palindrome (452686254).

The spelling of 212442042 in words is "two hundred twelve million, four hundred forty-two thousand, forty-two".