42946645 has 8 divisors (see below), whose sum is σ = 58898304. Its totient is φ = 29449104.

The previous prime is 42946633. The next prime is 42946663. The reversal of 42946645 is 54664924.

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 42946645 - 2¹³ = 42938453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42946598 and 42946607.

It is a congruent number.

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, 613489 + ... + 613558.

It is an arithmetic number, because the mean of its divisors is an integer number (7362288).

Almost surely, 2^42946645 is an apocalyptic number.

It is an amenable number.

42946645 is a deficient number, since it is larger than the sum of its proper divisors (15951659).

42946645 is a wasteful number, since it uses less digits than its factorization.

42946645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227059.

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

The square root of 42946645 is about 6553.3689809136. The cubic root of 42946645 is about 350.1948438918.

It can be divided in two parts, 429 and 46645, that added together give a palindrome (47074).

The spelling of 42946645 in words is "forty-two million, nine hundred forty-six thousand, six hundred forty-five".