42242422451 has 2 divisors, whose sum is σ = 42242422452. Its totient is φ = 42242422450.

The previous prime is 42242422447. The next prime is 42242422457. The reversal of 42242422451 is 15422424224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42242422451 - 2² = 42242422447 is a prime.

It is not a weakly prime, because it can be changed into another prime (42242422457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121211225 + 21121211226.

It is an arithmetic number, because the mean of its divisors is an integer number (21121211226).

Almost surely, 2^42242422451 is an apocalyptic number.

42242422451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242422451 is an equidigital number, since it uses as much as digits as its factorization.

42242422451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40960, while the sum is 32.

Adding to 42242422451 its reverse (15422424224), we get a palindrome (57664846675).

The spelling of 42242422451 in words is "forty-two billion, two hundred forty-two million, four hundred twenty-two thousand, four hundred fifty-one".