20443102042 has 16 divisors (see below), whose sum is σ = 33951640032. Its totient is φ = 9153627120.

The previous prime is 20443102019. The next prime is 20443102049. The reversal of 20443102042 is 24020134402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20443102049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6933093 + ... + 6936040.

It is an arithmetic number, because the mean of its divisors is an integer number (2121977502).

Almost surely, 2^20443102042 is an apocalyptic number.

20443102042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20443102042 is a deficient number, since it is larger than the sum of its proper divisors (13508537990).

20443102042 is a wasteful number, since it uses less digits than its factorization.

20443102042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13869213.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20443102042 its reverse (24020134402), we get a palindrome (44463236444).

The spelling of 20443102042 in words is "twenty billion, four hundred forty-three million, one hundred two thousand, forty-two".