211142302442 has 8 divisors (see below), whose sum is σ = 317562552516. Its totient is φ = 105288118272.

The previous prime is 211142302433. The next prime is 211142302489. The reversal of 211142302442 is 244203241112.

It can be written as a sum of positive squares in 2 ways, for example, as 209405996881 + 1736305561 = 457609^2 + 41669^2 .

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, 141515543 + ... + 141517034.

Almost surely, 2^211142302442 is an apocalyptic number.

211142302442 is a deficient number, since it is larger than the sum of its proper divisors (106420250074).

211142302442 is a wasteful number, since it uses less digits than its factorization.

211142302442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283032952.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 211142302442 its reverse (244203241112), we get a palindrome (455345543554).

The spelling of 211142302442 in words is "two hundred eleven billion, one hundred forty-two million, three hundred two thousand, four hundred forty-two".