210342020105 has 32 divisors (see below), whose sum is σ = 300665683968. Its totient is φ = 138226564800.

The previous prime is 210342020081. The next prime is 210342020107. The reversal of 210342020105 is 501020243012.

It is not a de Polignac number, because 210342020105 - 2⁶ = 210342020041 is a prime.

It is a super-2 number, since 2×210342020105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210342020107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 829331 + ... + 1052840.

It is an arithmetic number, because the mean of its divisors is an integer number (9395802624).

Almost surely, 2^210342020105 is an apocalyptic number.

It is an amenable number.

210342020105 is a deficient number, since it is larger than the sum of its proper divisors (90323663863).

210342020105 is a wasteful number, since it uses less digits than its factorization.

210342020105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882317.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 210342020105 its reverse (501020243012), we get a palindrome (711362263117).

The spelling of 210342020105 in words is "two hundred ten billion, three hundred forty-two million, twenty thousand, one hundred five".