42047619 has 4 divisors (see below), whose sum is σ = 56063496. Its totient is φ = 28031744.

The previous prime is 42047617. The next prime is 42047623. The reversal of 42047619 is 91674024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42047619 - 2¹ = 42047617 is a prime.

It is a super-2 number, since 2×42047619² = 3536004527138322, which contains 22 as substring.

42047619 is a modest number, since divided by 47619 gives 42 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 42047619.

It is not an unprimeable number, because it can be changed into a prime (42047617) 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, 7007934 + ... + 7007939.

It is an arithmetic number, because the mean of its divisors is an integer number (14015874).

Almost surely, 2^42047619 is an apocalyptic number.

42047619 is a deficient number, since it is larger than the sum of its proper divisors (14015877).

42047619 is a wasteful number, since it uses less digits than its factorization.

42047619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14015876.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 42047619 is about 6484.4135432589. The cubic root of 42047619 is about 347.7339838502.

The spelling of 42047619 in words is "forty-two million, forty-seven thousand, six hundred nineteen".