42443719 has 2 divisors, whose sum is σ = 42443720. Its totient is φ = 42443718.

The previous prime is 42443689. The next prime is 42443741. The reversal of 42443719 is 91734424.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42443719 - 2¹³ = 42435527 is a prime.

It is a super-2 number, since 2×42443719² = 3602938565101922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42443759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21221859 + 21221860.

It is an arithmetic number, because the mean of its divisors is an integer number (21221860).

Almost surely, 2^42443719 is an apocalyptic number.

42443719 is a deficient number, since it is larger than the sum of its proper divisors (1).

42443719 is an equidigital number, since it uses as much as digits as its factorization.

42443719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 42443719 is about 6514.8844195427. The cubic root of 42443719 is about 348.8224891819.

The spelling of 42443719 in words is "forty-two million, four hundred forty-three thousand, seven hundred nineteen".