20123042034 has 32 divisors (see below), whose sum is σ = 40779861120. Its totient is φ = 6619237632.

The previous prime is 20123042011. The next prime is 20123042041. The reversal of 20123042034 is 43024032102.

It is a self number, because there is not a number n which added to its sum of digits gives 20123042034.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90459 + ... + 220065.

It is an arithmetic number, because the mean of its divisors is an integer number (1274370660).

Almost surely, 2^20123042034 is an apocalyptic number.

20123042034 is an abundant number, since it is smaller than the sum of its proper divisors (20656819086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123042034 is a wasteful number, since it uses less digits than its factorization.

20123042034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129954.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20123042034 its reverse (43024032102), we get a palindrome (63147074136).

The spelling of 20123042034 in words is "twenty billion, one hundred twenty-three million, forty-two thousand, thirty-four".