20123035042 has 16 divisors (see below), whose sum is σ = 33095760192. Its totient is φ = 9100401520.

The previous prime is 20123035039. The next prime is 20123035057. The reversal of 20123035042 is 24053032102.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2317198 + ... + 2325865.

It is an arithmetic number, because the mean of its divisors is an integer number (2068485012).

Almost surely, 2^20123035042 is an apocalyptic number.

20123035042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20123035042 is a deficient number, since it is larger than the sum of its proper divisors (12972725150).

20123035042 is a wasteful number, since it uses less digits than its factorization.

20123035042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4643273.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20123035042 its reverse (24053032102), we get a palindrome (44176067144).

The spelling of 20123035042 in words is "twenty billion, one hundred twenty-three million, thirty-five thousand, forty-two".