43042319 has 4 divisors (see below), whose sum is σ = 43194696. Its totient is φ = 42889944.

The previous prime is 43042313. The next prime is 43042327. The reversal of 43042319 is 91324034.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43042319 is a prime.

It is a super-2 number, since 2×43042319² = 3705282449795522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43042313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75764 + ... + 76329.

It is an arithmetic number, because the mean of its divisors is an integer number (10798674).

Almost surely, 2^43042319 is an apocalyptic number.

43042319 is a deficient number, since it is larger than the sum of its proper divisors (152377).

43042319 is a wasteful number, since it uses less digits than its factorization.

43042319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152376.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 43042319 is about 6560.6645242689. The cubic root of 43042319 is about 350.4546988229.

The spelling of 43042319 in words is "forty-three million, forty-two thousand, three hundred nineteen".