2105421046 has 32 divisors (see below), whose sum is σ = 3362688000. Its totient is φ = 985869792.

The previous prime is 2105421037. The next prime is 2105421047. The reversal of 2105421046 is 6401245012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105421046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105421047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1462395 + ... + 1463833.

It is an arithmetic number, because the mean of its divisors is an integer number (105084000).

Almost surely, 2^2105421046 is an apocalyptic number.

2105421046 is a deficient number, since it is larger than the sum of its proper divisors (1257266954).

2105421046 is a wasteful number, since it uses less digits than its factorization.

2105421046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876.

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

The square root of 2105421046 is about 45884.8672875928. The cubic root of 2105421046 is about 1281.6801353951.

Adding to 2105421046 its reverse (6401245012), we get a palindrome (8506666058).

The spelling of 2105421046 in words is "two billion, one hundred five million, four hundred twenty-one thousand, forty-six".