2164423106042 has 4 divisors (see below), whose sum is σ = 3246634659066. Its totient is φ = 1082211553020.

The previous prime is 2164423105991. The next prime is 2164423106071. The reversal of 2164423106042 is 2406013244612.

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., 2156230864921 + 8192241121 = 1468411^2 + 90511^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2164423105993 and 2164423106011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541105776509 + ... + 541105776512.

Almost surely, 2^{2164423106042} is an apocalyptic number.

2164423106042 is a deficient number, since it is larger than the sum of its proper divisors (1082211553024).

2164423106042 is a wasteful number, since it uses less digits than its factorization.

2164423106042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082211553023.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 2164423106042 in words is "two trillion, one hundred sixty-four billion, four hundred twenty-three million, one hundred six thousand, forty-two".