42193487 has 4 divisors (see below), whose sum is σ = 48221136. Its totient is φ = 36165840.

The previous prime is 42193483. The next prime is 42193513. The reversal of 42193487 is 78439124.

42193487 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 42193487 - 2² = 42193483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42193487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42193483) 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, 3013814 + ... + 3013827.

It is an arithmetic number, because the mean of its divisors is an integer number (12055284).

Almost surely, 2^42193487 is an apocalyptic number.

42193487 is a deficient number, since it is larger than the sum of its proper divisors (6027649).

42193487 is an equidigital number, since it uses as much as digits as its factorization.

42193487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027648.

The product of its digits is 48384, while the sum is 38.

The square root of 42193487 is about 6495.6513915080. The cubic root of 42193487 is about 348.1356294116.

The spelling of 42193487 in words is "forty-two million, one hundred ninety-three thousand, four hundred eighty-seven".