42923845 has 8 divisors (see below), whose sum is σ = 51561720. Its totient is φ = 34303680.

The previous prime is 42923833. The next prime is 42923851. The reversal of 42923845 is 54832924.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1153476 + 41770369 = 1074^2 + 6463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42923845 - 2¹⁷ = 42792773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675 + ... + 9415.

It is an arithmetic number, because the mean of its divisors is an integer number (6445215).

Almost surely, 2^42923845 is an apocalyptic number.

It is an amenable number.

42923845 is a deficient number, since it is larger than the sum of its proper divisors (8637875).

42923845 is a wasteful number, since it uses less digits than its factorization.

42923845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8855.

The product of its digits is 69120, while the sum is 37.

The square root of 42923845 is about 6551.6291866985. The cubic root of 42923845 is about 350.1328611237.

The spelling of 42923845 in words is "forty-two million, nine hundred twenty-three thousand, eight hundred forty-five".