210142443031123 has 2 divisors, whose sum is σ = 210142443031124. Its totient is φ = 210142443031122.

The previous prime is 210142443031121. The next prime is 210142443031181. The reversal of 210142443031123 is 321130344241012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210142443031123 - 2¹ = 210142443031121 is a prime.

It is a super-2 number, since 2×210142443031123² (a number of 29 digits) contains 22 as substring.

Together with 210142443031121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (210142443031121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105071221515561 + 105071221515562.

It is an arithmetic number, because the mean of its divisors is an integer number (105071221515562).

Almost surely, 2^{210142443031123} is an apocalyptic number.

210142443031123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210142443031123 is an equidigital number, since it uses as much as digits as its factorization.

210142443031123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 210142443031123 its reverse (321130344241012), we get a palindrome (531272787272135).

The spelling of 210142443031123 in words is "two hundred ten trillion, one hundred forty-two billion, four hundred forty-three million, thirty-one thousand, one hundred twenty-three".