42815119 has 2 divisors, whose sum is σ = 42815120. Its totient is φ = 42815118.

The previous prime is 42815117. The next prime is 42815153. The reversal of 42815119 is 91151824.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42815119 - 2¹ = 42815117 is a prime.

It is a super-2 number, since 2×42815119² = 3666268829968322, which contains 22 as substring.

Together with 42815117, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42815117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21407559 + 21407560.

It is an arithmetic number, because the mean of its divisors is an integer number (21407560).

Almost surely, 2^42815119 is an apocalyptic number.

42815119 is a deficient number, since it is larger than the sum of its proper divisors (1).

42815119 is an equidigital number, since it uses as much as digits as its factorization.

42815119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 31.

The square root of 42815119 is about 6543.3262947831. The cubic root of 42815119 is about 349.8369825875.

The spelling of 42815119 in words is "forty-two million, eight hundred fifteen thousand, one hundred nineteen".