42641645 has 8 divisors (see below), whose sum is σ = 51509760. Its totient is φ = 33886800.

The previous prime is 42641639. The next prime is 42641659. The reversal of 42641645 is 54614624.

42641645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42641645 - 2¹² = 42637549 is a prime.

It is a super-3 number, since 3×42641645³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27485 + ... + 28994.

It is an arithmetic number, because the mean of its divisors is an integer number (6438720).

Almost surely, 2^42641645 is an apocalyptic number.

It is an amenable number.

42641645 is a deficient number, since it is larger than the sum of its proper divisors (8868115).

42641645 is a wasteful number, since it uses less digits than its factorization.

42641645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56635.

The product of its digits is 23040, while the sum is 32.

The square root of 42641645 is about 6530.0570441613. The cubic root of 42641645 is about 349.3638649148.

The spelling of 42641645 in words is "forty-two million, six hundred forty-one thousand, six hundred forty-five".