212057242 has 8 divisors (see below), whose sum is σ = 318322656. Its totient is φ = 105949692.

The previous prime is 212057227. The next prime is 212057243. The reversal of 212057242 is 242750212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (212057243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36048 + ... + 41515.

It is an arithmetic number, because the mean of its divisors is an integer number (39790332).

Almost surely, 2^212057242 is an apocalyptic number.

212057242 is a deficient number, since it is larger than the sum of its proper divisors (106265414).

212057242 is a wasteful number, since it uses less digits than its factorization.

212057242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78932.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 212057242 is about 14562.1853442401. The cubic root of 212057242 is about 596.3268574076.

The spelling of 212057242 in words is "two hundred twelve million, fifty-seven thousand, two hundred forty-two".