20123140400034 has 128 divisors (see below), whose sum is σ = 46471864320000. Its totient is φ = 5690330085888.

The previous prime is 20123140399963. The next prime is 20123140400039. The reversal of 20123140400034 is 43000404132102.

It is a junction number, because it is equal to n+sod(n) for n = 20123140399977 and 20123140400013.

It is not an unprimeable number, because it can be changed into a prime (20123140400039) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1542114742 + ... + 1542127790.

It is an arithmetic number, because the mean of its divisors is an integer number (363061440000).

Almost surely, 2^{20123140400034} is an apocalyptic number.

20123140400034 is an abundant number, since it is smaller than the sum of its proper divisors (26348723919966).

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

20123140400034 is a wasteful number, since it uses less digits than its factorization.

20123140400034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14232.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20123140400034 its reverse (43000404132102), we get a palindrome (63123544532136).

The spelling of 20123140400034 in words is "twenty trillion, one hundred twenty-three billion, one hundred forty million, four hundred thousand, thirty-four".