42046645 has 16 divisors (see below), whose sum is σ = 53550720. Its totient is φ = 31624384.

The previous prime is 42046643. The next prime is 42046651. The reversal of 42046645 is 54664024.

It is a cyclic number.

It is not a de Polignac number, because 42046645 - 2¹ = 42046643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42046643) 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 15 ways as a sum of consecutive naturals, for example, 3687 + ... + 9883.

It is an arithmetic number, because the mean of its divisors is an integer number (3346920).

Almost surely, 2^42046645 is an apocalyptic number.

It is an amenable number.

42046645 is a deficient number, since it is larger than the sum of its proper divisors (11504075).

42046645 is a wasteful number, since it uses less digits than its factorization.

42046645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 42046645 is about 6484.3384396560. The cubic root of 42046645 is about 347.7312988348.

The spelling of 42046645 in words is "forty-two million, forty-six thousand, six hundred forty-five".