42745323 has 32 divisors (see below), whose sum is σ = 61067520. Its totient is φ = 26559360.

The previous prime is 42745319. The next prime is 42745343. The reversal of 42745323 is 32354724.

It is not a de Polignac number, because 42745323 - 2² = 42745319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42745343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399436 + ... + 399542.

It is an arithmetic number, because the mean of its divisors is an integer number (1908360).

Almost surely, 2^42745323 is an apocalyptic number.

42745323 is a deficient number, since it is larger than the sum of its proper divisors (18322197).

42745323 is a wasteful number, since it uses less digits than its factorization.

42745323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267.

The product of its digits is 20160, while the sum is 30.

The square root of 42745323 is about 6537.9907463991. The cubic root of 42745323 is about 349.6467810674.

The spelling of 42745323 in words is "forty-two million, seven hundred forty-five thousand, three hundred twenty-three".