20123010042 has 32 divisors (see below), whose sum is σ = 41658598080. Its totient is φ = 6472515840.

The previous prime is 20123010001. The next prime is 20123010049. The reversal of 20123010042 is 24001032102.

It is not an unprimeable number, because it can be changed into a prime (20123010049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266242 + ... + 333362.

It is an arithmetic number, because the mean of its divisors is an integer number (1301831190).

Almost surely, 2^20123010042 is an apocalyptic number.

20123010042 is an abundant number, since it is smaller than the sum of its proper divisors (21535588038).

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

20123010042 is a wasteful number, since it uses less digits than its factorization.

20123010042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68878.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20123010042 its reverse (24001032102), we get a palindrome (44124042144).

The spelling of 20123010042 in words is "twenty billion, one hundred twenty-three million, ten thousand, forty-two".