42241211203123 has 2 divisors, whose sum is σ = 42241211203124. Its totient is φ = 42241211203122.

The previous prime is 42241211203109. The next prime is 42241211203141. The reversal of 42241211203123 is 32130211214224.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42241211203123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42241211203091 and 42241211203100.

It is not a weakly prime, because it can be changed into another prime (42241211209123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21120605601561 + 21120605601562.

It is an arithmetic number, because the mean of its divisors is an integer number (21120605601562).

Almost surely, 2^{42241211203123} is an apocalyptic number.

42241211203123 is a deficient number, since it is larger than the sum of its proper divisors (1).

42241211203123 is an equidigital number, since it uses as much as digits as its factorization.

42241211203123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 42241211203123 its reverse (32130211214224), we get a palindrome (74371422417347).

The spelling of 42241211203123 in words is "forty-two trillion, two hundred forty-one billion, two hundred eleven million, two hundred three thousand, one hundred twenty-three".