42093619 has 2 divisors, whose sum is σ = 42093620. Its totient is φ = 42093618.

The previous prime is 42093613. The next prime is 42093631. The reversal of 42093619 is 91639024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42093619 is a prime.

It is a super-2 number, since 2×42093619² = 3543745521034322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42093613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21046809 + 21046810.

It is an arithmetic number, because the mean of its divisors is an integer number (21046810).

Almost surely, 2^42093619 is an apocalyptic number.

42093619 is a deficient number, since it is larger than the sum of its proper divisors (1).

42093619 is an equidigital number, since it uses as much as digits as its factorization.

42093619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 42093619 is about 6487.9595405644. The cubic root of 42093619 is about 347.8607443666.

The spelling of 42093619 in words is "forty-two million, ninety-three thousand, six hundred nineteen".