211274242 has 4 divisors (see below), whose sum is σ = 316911366. Its totient is φ = 105637120.

The previous prime is 211274213. The next prime is 211274333. The reversal of 211274242 is 242472112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 158986881 + 52287361 = 12609^2 + 7231^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52818559 + ... + 52818562.

Almost surely, 2^211274242 is an apocalyptic number.

211274242 is a deficient number, since it is larger than the sum of its proper divisors (105637124).

211274242 is a wasteful number, since it uses less digits than its factorization.

211274242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105637123.

The product of its digits is 1792, while the sum is 25.

The square root of 211274242 is about 14535.2757799775. The cubic root of 211274242 is about 595.5919932477.

The spelling of 211274242 in words is "two hundred eleven million, two hundred seventy-four thousand, two hundred forty-two".