142104224261 has 2 divisors, whose sum is σ = 142104224262. Its totient is φ = 142104224260.

The previous prime is 142104224231. The next prime is 142104224263. The reversal of 142104224261 is 162422401241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127627562500 + 14476661761 = 357250^2 + 120319^2 .

It is an emirp because it is prime and its reverse (162422401241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142104224261 - 2²⁶ = 142037115397 is a prime.

It is a super-2 number, since 2×142104224261² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 142104224263, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142104224263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71052112130 + 71052112131.

It is an arithmetic number, because the mean of its divisors is an integer number (71052112131).

Almost surely, 2^142104224261 is an apocalyptic number.

It is an amenable number.

142104224261 is a deficient number, since it is larger than the sum of its proper divisors (1).

142104224261 is an equidigital number, since it uses as much as digits as its factorization.

142104224261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 142104224261 in words is "one hundred forty-two billion, one hundred four million, two hundred twenty-four thousand, two hundred sixty-one".