211413442 has 4 divisors (see below), whose sum is σ = 317120166. Its totient is φ = 105706720.

The previous prime is 211413427. The next prime is 211413463. The reversal of 211413442 is 244314112.

It is a happy number.

211413442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 120802081 + 90611361 = 10991^2 + 9519^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52853359 + ... + 52853362.

Almost surely, 2^211413442 is an apocalyptic number.

211413442 is a deficient number, since it is larger than the sum of its proper divisors (105706724).

211413442 is a wasteful number, since it uses less digits than its factorization.

211413442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105706723.

The product of its digits is 768, while the sum is 22.

The square root of 211413442 is about 14540.0633423655. The cubic root of 211413442 is about 595.7227683065.

Adding to 211413442 its reverse (244314112), we get a palindrome (455727554).

The spelling of 211413442 in words is "two hundred eleven million, four hundred thirteen thousand, four hundred forty-two".