20120042023 has 2 divisors, whose sum is σ = 20120042024. Its totient is φ = 20120042022.

The previous prime is 20120041967. The next prime is 20120042029. The reversal of 20120042023 is 32024002102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120042023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20120041988 and 20120042006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120042029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060021011 + 10060021012.

It is an arithmetic number, because the mean of its divisors is an integer number (10060021012).

Almost surely, 2^20120042023 is an apocalyptic number.

20120042023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120042023 is an equidigital number, since it uses as much as digits as its factorization.

20120042023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20120042023 its reverse (32024002102), we get a palindrome (52144044125).

The spelling of 20120042023 in words is "twenty billion, one hundred twenty million, forty-two thousand, twenty-three".