42694645 has 8 divisors (see below), whose sum is σ = 58552704. Its totient is φ = 29276304.

The previous prime is 42694637. The next prime is 42694679. The reversal of 42694645 is 54649624.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42694645 - 2³ = 42694637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42694598 and 42694607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609889 + ... + 609958.

It is an arithmetic number, because the mean of its divisors is an integer number (7319088).

Almost surely, 2^42694645 is an apocalyptic number.

It is an amenable number.

42694645 is a deficient number, since it is larger than the sum of its proper divisors (15858059).

42694645 is a wasteful number, since it uses less digits than its factorization.

42694645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219859.

The product of its digits is 207360, while the sum is 40.

The square root of 42694645 is about 6534.1139414614. The cubic root of 42694645 is about 349.5085483476.

The spelling of 42694645 in words is "forty-two million, six hundred ninety-four thousand, six hundred forty-five".