210289744442 has 8 divisors (see below), whose sum is σ = 326311672500. Its totient is φ = 101519186944.

The previous prime is 210289744411. The next prime is 210289744447. The reversal of 210289744442 is 244447982012.

It can be written as a sum of positive squares in 2 ways, for example, as 201287719801 + 9002024641 = 448651^2 + 94879^2 .

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

It is not an unprimeable number, because it can be changed into a prime (210289744447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1812842567 + ... + 1812842682.

Almost surely, 2^210289744442 is an apocalyptic number.

210289744442 is a deficient number, since it is larger than the sum of its proper divisors (116021928058).

210289744442 is a wasteful number, since it uses less digits than its factorization.

210289744442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625685280.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 210289744442 in words is "two hundred ten billion, two hundred eighty-nine million, seven hundred forty-four thousand, four hundred forty-two".