20102043 has 24 divisors (see below), whose sum is σ = 29982720. Its totient is φ = 11962080.

The previous prime is 20102029. The next prime is 20102087. The reversal of 20102043 is 34020102.

It is not a de Polignac number, because 20102043 - 2⁶ = 20101979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20102003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15078 + ... + 16356.

It is an arithmetic number, because the mean of its divisors is an integer number (1249280).

Almost surely, 2^20102043 is an apocalyptic number.

20102043 is a deficient number, since it is larger than the sum of its proper divisors (9880677).

20102043 is a wasteful number, since it uses less digits than its factorization.

20102043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20102043 is about 4483.5301939432. The cubic root of 20102043 is about 271.9026242773.

Adding to 20102043 its reverse (34020102), we get a palindrome (54122145).

The spelling of 20102043 in words is "twenty million, one hundred two thousand, forty-three".