20042123102 has 8 divisors (see below), whose sum is σ = 30065671800. Its totient is φ = 10020232504.

The previous prime is 20042123099. The next prime is 20042123107. The reversal of 20042123102 is 20132124002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042123107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383852 + ... + 432927.

It is an arithmetic number, because the mean of its divisors is an integer number (3758208975).

Almost surely, 2^20042123102 is an apocalyptic number.

20042123102 is a deficient number, since it is larger than the sum of its proper divisors (10023548698).

20042123102 is a wasteful number, since it uses less digits than its factorization.

20042123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829050.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20042123102 its reverse (20132124002), we get a palindrome (40174247104).

The spelling of 20042123102 in words is "twenty billion, forty-two million, one hundred twenty-three thousand, one hundred two".