42423201251 has 2 divisors, whose sum is σ = 42423201252. Its totient is φ = 42423201250.

The previous prime is 42423201199. The next prime is 42423201263. The reversal of 42423201251 is 15210232424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42423201251 - 2¹⁰ = 42423200227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42423201251.

It is not a weakly prime, because it can be changed into another prime (42423201151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21211600625 + 21211600626.

It is an arithmetic number, because the mean of its divisors is an integer number (21211600626).

Almost surely, 2^42423201251 is an apocalyptic number.

42423201251 is a deficient number, since it is larger than the sum of its proper divisors (1).

42423201251 is an equidigital number, since it uses as much as digits as its factorization.

42423201251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 42423201251 its reverse (15210232424), we get a palindrome (57633433675).

The spelling of 42423201251 in words is "forty-two billion, four hundred twenty-three million, two hundred one thousand, two hundred fifty-one".