212243974 has 8 divisors (see below), whose sum is σ = 320272848. Its totient is φ = 105486360.

The previous prime is 212243957. The next prime is 212243981. The reversal of 212243974 is 479342212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317397 + ... + 318064.

It is an arithmetic number, because the mean of its divisors is an integer number (40034106).

Almost surely, 2^212243974 is an apocalyptic number.

212243974 is a deficient number, since it is larger than the sum of its proper divisors (108028874).

212243974 is a wasteful number, since it uses less digits than its factorization.

212243974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635630.

The product of its digits is 24192, while the sum is 34.

The square root of 212243974 is about 14568.5954710809. The cubic root of 212243974 is about 596.5018426093.

The spelling of 212243974 in words is "two hundred twelve million, two hundred forty-three thousand, nine hundred seventy-four".