42121013023 has 2 divisors, whose sum is σ = 42121013024. Its totient is φ = 42121013022.

The previous prime is 42121013003. The next prime is 42121013027. The reversal of 42121013023 is 32031012124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42121013023 - 2⁵ = 42121012991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42121013027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060506511 + 21060506512.

It is an arithmetic number, because the mean of its divisors is an integer number (21060506512).

Almost surely, 2^42121013023 is an apocalyptic number.

42121013023 is a deficient number, since it is larger than the sum of its proper divisors (1).

42121013023 is an equidigital number, since it uses as much as digits as its factorization.

42121013023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 42121013023 its reverse (32031012124), we get a palindrome (74152025147).

It can be divided in two parts, 4212101 and 3023, that added together give a palindrome (4215124).

The spelling of 42121013023 in words is "forty-two billion, one hundred twenty-one million, thirteen thousand, twenty-three".