210105042169 has 8 divisors (see below), whose sum is σ = 229263326208. Its totient is φ = 190956395760.

The previous prime is 210105042151. The next prime is 210105042221. The reversal of 210105042169 is 961240501012.

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

It is a cyclic number.

It is not a de Polignac number, because 210105042169 - 2²³ = 210096653561 is a prime.

It is a super-2 number, since 2×210105042169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210105042169.

It is not an unprimeable number, because it can be changed into a prime (210105040169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2363782 + ... + 2451055.

It is an arithmetic number, because the mean of its divisors is an integer number (28657915776).

Almost surely, 2^210105042169 is an apocalyptic number.

It is an amenable number.

210105042169 is a deficient number, since it is larger than the sum of its proper divisors (19158284039).

210105042169 is a wasteful number, since it uses less digits than its factorization.

210105042169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818815.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 210105042169 in words is "two hundred ten billion, one hundred five million, forty-two thousand, one hundred sixty-nine".