42861593 has 4 divisors (see below), whose sum is σ = 42890448. Its totient is φ = 42832740.

The previous prime is 42861569. The next prime is 42861601. The reversal of 42861593 is 39516824.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42861593 - 2⁸ = 42861337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42861193) 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, 12071 + ... + 15212.

It is an arithmetic number, because the mean of its divisors is an integer number (10722612).

Almost surely, 2^42861593 is an apocalyptic number.

It is an amenable number.

42861593 is a deficient number, since it is larger than the sum of its proper divisors (28855).

42861593 is a wasteful number, since it uses less digits than its factorization.

42861593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28854.

The product of its digits is 51840, while the sum is 38.

The square root of 42861593 is about 6546.8765835320. The cubic root of 42861593 is about 349.9635145641.

The spelling of 42861593 in words is "forty-two million, eight hundred sixty-one thousand, five hundred ninety-three".