212987242 has 8 divisors (see below), whose sum is σ = 344056356. Its totient is φ = 98301792.

The previous prime is 212987233. The next prime is 212987263. The reversal of 212987242 is 242789212.

It can be written as a sum of positive squares in 2 ways, for example, as 154480041 + 58507201 = 12429^2 + 7649^2 .

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

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, 4095883 + ... + 4095934.

Almost surely, 2^212987242 is an apocalyptic number.

212987242 is a deficient number, since it is larger than the sum of its proper divisors (131069114).

212987242 is a wasteful number, since it uses less digits than its factorization.

212987242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8191832.

The product of its digits is 32256, while the sum is 37.

The square root of 212987242 is about 14594.0824309033. The cubic root of 212987242 is about 597.1973381205.

The spelling of 212987242 in words is "two hundred twelve million, nine hundred eighty-seven thousand, two hundred forty-two".