42222437 has 2 divisors, whose sum is σ = 42222438. Its totient is φ = 42222436.

The previous prime is 42222421. The next prime is 42222473. The reversal of 42222437 is 73422224.

Together with next prime (42222473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36312676 + 5909761 = 6026^2 + 2431^2 .

It is a cyclic number.

It is not a de Polignac number, because 42222437 - 2⁴ = 42222421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42222487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111218 + 21111219.

It is an arithmetic number, because the mean of its divisors is an integer number (21111219).

Almost surely, 2^42222437 is an apocalyptic number.

It is an amenable number.

42222437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42222437 is an equidigital number, since it uses as much as digits as its factorization.

42222437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 26.

The square root of 42222437 is about 6497.8794233196. The cubic root of 42222437 is about 348.2152327107.

The spelling of 42222437 in words is "forty-two million, two hundred twenty-two thousand, four hundred thirty-seven".