42202401223987 has 2 divisors, whose sum is σ = 42202401223988. Its totient is φ = 42202401223986.

The previous prime is 42202401223981. The next prime is 42202401224003. The reversal of 42202401223987 is 78932210420224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42202401223987 - 2³ = 42202401223979 is a prime.

It is not a weakly prime, because it can be changed into another prime (42202401223981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21101200611993 + 21101200611994.

It is an arithmetic number, because the mean of its divisors is an integer number (21101200611994).

Almost surely, 2^{42202401223987} is an apocalyptic number.

42202401223987 is a deficient number, since it is larger than the sum of its proper divisors (1).

42202401223987 is an equidigital number, since it uses as much as digits as its factorization.

42202401223987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 42202401223987 in words is "forty-two trillion, two hundred two billion, four hundred one million, two hundred twenty-three thousand, nine hundred eighty-seven".