42145363241 has 2 divisors, whose sum is σ = 42145363242. Its totient is φ = 42145363240.

The previous prime is 42145363237. The next prime is 42145363243. The reversal of 42145363241 is 14236354124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35577881641 + 6567481600 = 188621^2 + 81040^2 .

It is a cyclic number.

It is not a de Polignac number, because 42145363241 - 2² = 42145363237 is a prime.

Together with 42145363243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42145363243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21072681620 + 21072681621.

It is an arithmetic number, because the mean of its divisors is an integer number (21072681621).

Almost surely, 2^42145363241 is an apocalyptic number.

It is an amenable number.

42145363241 is a deficient number, since it is larger than the sum of its proper divisors (1).

42145363241 is an equidigital number, since it uses as much as digits as its factorization.

42145363241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 35.

The spelling of 42145363241 in words is "forty-two billion, one hundred forty-five million, three hundred sixty-three thousand, two hundred forty-one".