42130103261 has 2 divisors, whose sum is σ = 42130103262. Its totient is φ = 42130103260.

The previous prime is 42130103251. The next prime is 42130103263. The reversal of 42130103261 is 16230103124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27557992036 + 14572111225 = 166006^2 + 120715^2 .

It is a cyclic number.

It is not a de Polignac number, because 42130103261 - 2³⁴ = 24950234077 is a prime.

Together with 42130103263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42130103263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065051630 + 21065051631.

It is an arithmetic number, because the mean of its divisors is an integer number (21065051631).

Almost surely, 2^42130103261 is an apocalyptic number.

It is an amenable number.

42130103261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42130103261 is an equidigital number, since it uses as much as digits as its factorization.

42130103261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 42130103261 its reverse (16230103124), we get a palindrome (58360206385).

The spelling of 42130103261 in words is "forty-two billion, one hundred thirty million, one hundred three thousand, two hundred sixty-one".