42212441 has 2 divisors, whose sum is σ = 42212442. Its totient is φ = 42212440.

The previous prime is 42212431. The next prime is 42212459. The reversal of 42212441 is 14421224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38390416 + 3822025 = 6196^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 42212441 - 2¹⁸ = 41950297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42212431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106220 + 21106221.

It is an arithmetic number, because the mean of its divisors is an integer number (21106221).

Almost surely, 2^42212441 is an apocalyptic number.

It is an amenable number.

42212441 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212441 is an equidigital number, since it uses as much as digits as its factorization.

42212441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 20.

The square root of 42212441 is about 6497.1102037752. The cubic root of 42212441 is about 348.1877510017.

Adding to 42212441 its reverse (14421224), we get a palindrome (56633665).

The spelling of 42212441 in words is "forty-two million, two hundred twelve thousand, four hundred forty-one".