42142619 has 4 divisors (see below), whose sum is σ = 42156096. Its totient is φ = 42129144.

The previous prime is 42142577. The next prime is 42142621. The reversal of 42142619 is 91624124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42142619 - 2⁸ = 42142363 is a prime.

It is a super-2 number, since 2×42142619² = 3552000672358322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42142591 and 42142600.

It is not an unprimeable number, because it can be changed into a prime (42142319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662 + ... + 9204.

It is an arithmetic number, because the mean of its divisors is an integer number (10539024).

Almost surely, 2^42142619 is an apocalyptic number.

42142619 is a deficient number, since it is larger than the sum of its proper divisors (13477).

42142619 is an equidigital number, since it uses as much as digits as its factorization.

42142619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13476.

The product of its digits is 3456, while the sum is 29.

The square root of 42142619 is about 6491.7346680221. The cubic root of 42142619 is about 347.9956703341.

The spelling of 42142619 in words is "forty-two million, one hundred forty-two thousand, six hundred nineteen".