42000745 has 8 divisors (see below), whose sum is σ = 51039360. Its totient is φ = 33174960.

The previous prime is 42000731. The next prime is 42000779. The reversal of 42000745 is 54700024.

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

It is not a de Polignac number, because 42000745 - 2¹⁵ = 41967977 is a prime.

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, 52771 + ... + 53560.

It is an arithmetic number, because the mean of its divisors is an integer number (6379920).

Almost surely, 2^42000745 is an apocalyptic number.

It is an amenable number.

42000745 is a deficient number, since it is larger than the sum of its proper divisors (9038615).

42000745 is a wasteful number, since it uses less digits than its factorization.

42000745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106415.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 42000745 is about 6480.7981761508. The cubic root of 42000745 is about 347.6047197462.

Adding to 42000745 its reverse (54700024), we get a palindrome (96700769).

The spelling of 42000745 in words is "forty-two million, seven hundred forty-five", and thus it is an aban number.