42415643 has 4 divisors (see below), whose sum is σ = 42434448. Its totient is φ = 42396840.

The previous prime is 42415627. The next prime is 42415649. The reversal of 42415643 is 34651424.

42415643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42415643 - 2⁴ = 42415627 is a prime.

It is a super-2 number, since 2×42415643² = 3598173542206898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42415649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5471 + ... + 10712.

It is an arithmetic number, because the mean of its divisors is an integer number (10608612).

Almost surely, 2^42415643 is an apocalyptic number.

42415643 is a deficient number, since it is larger than the sum of its proper divisors (18805).

42415643 is a wasteful number, since it uses less digits than its factorization.

42415643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18804.

The product of its digits is 11520, while the sum is 29.

The square root of 42415643 is about 6512.7293049842. The cubic root of 42415643 is about 348.7455582824.

The spelling of 42415643 in words is "forty-two million, four hundred fifteen thousand, six hundred forty-three".