42519427 has 2 divisors, whose sum is σ = 42519428. Its totient is φ = 42519426.

The previous prime is 42519403. The next prime is 42519437. The reversal of 42519427 is 72491524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42519427 - 2¹¹ = 42517379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42519392 and 42519401.

It is not a weakly prime, because it can be changed into another prime (42519437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21259713 + 21259714.

It is an arithmetic number, because the mean of its divisors is an integer number (21259714).

Almost surely, 2^42519427 is an apocalyptic number.

42519427 is a deficient number, since it is larger than the sum of its proper divisors (1).

42519427 is an equidigital number, since it uses as much as digits as its factorization.

42519427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 42519427 is about 6520.6922178554. The cubic root of 42519427 is about 349.0297673315.

The spelling of 42519427 in words is "forty-two million, five hundred nineteen thousand, four hundred twenty-seven".