442222061 has 2 divisors, whose sum is σ = 442222062. Its totient is φ = 442222060.

The previous prime is 442222049. The next prime is 442222063. The reversal of 442222061 is 160222244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441210025 + 1012036 = 21005^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 442222061 - 2¹⁰ = 442221037 is a prime.

It is a Sophie Germain prime.

Together with 442222063, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442222063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221111030 + 221111031.

It is an arithmetic number, because the mean of its divisors is an integer number (221111031).

Almost surely, 2^442222061 is an apocalyptic number.

It is an amenable number.

442222061 is a deficient number, since it is larger than the sum of its proper divisors (1).

442222061 is an equidigital number, since it uses as much as digits as its factorization.

442222061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 442222061 is about 21029.0765608003. The cubic root of 442222061 is about 761.8687053200.

The spelling of 442222061 in words is "four hundred forty-two million, two hundred twenty-two thousand, sixty-one".