2142105046 has 16 divisors (see below), whose sum is σ = 3359333088. Its totient is φ = 1022507200.

The previous prime is 2142105037. The next prime is 2142105067. The reversal of 2142105046 is 6405012412.

It is a happy number.

It is a super-2 number, since 2×2142105046² = 9177228056197324232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2142105046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20725 + ... + 68656.

It is an arithmetic number, because the mean of its divisors is an integer number (209958318).

Almost surely, 2^2142105046 is an apocalyptic number.

2142105046 is a deficient number, since it is larger than the sum of its proper divisors (1217228042).

2142105046 is a wasteful number, since it uses less digits than its factorization.

2142105046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89927.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2142105046 is about 46282.8807011837. The cubic root of 2142105046 is about 1289.0811408221.

Adding to 2142105046 its reverse (6405012412), we get a palindrome (8547117458).

The spelling of 2142105046 in words is "two billion, one hundred forty-two million, one hundred five thousand, forty-six".