42221274049 has 2 divisors, whose sum is σ = 42221274050. Its totient is φ = 42221274048.

The previous prime is 42221274037. The next prime is 42221274071. The reversal of 42221274049 is 94047212224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24108151824 + 18113122225 = 155268^2 + 134585^2 .

It is a cyclic number.

It is not a de Polignac number, because 42221274049 - 2²⁷ = 42087056321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42221273999 and 42221274017.

It is not a weakly prime, because it can be changed into another prime (42221274019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21110637024 + 21110637025.

It is an arithmetic number, because the mean of its divisors is an integer number (21110637025).

Almost surely, 2^42221274049 is an apocalyptic number.

It is an amenable number.

42221274049 is a deficient number, since it is larger than the sum of its proper divisors (1).

42221274049 is an equidigital number, since it uses as much as digits as its factorization.

42221274049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 42221274049 in words is "forty-two billion, two hundred twenty-one million, two hundred seventy-four thousand, forty-nine".