42868945 has 32 divisors (see below), whose sum is σ = 60592896. Its totient is φ = 28512000.

The previous prime is 42868907. The next prime is 42868961. The reversal of 42868945 is 54986824.

It is not a de Polignac number, because 42868945 - 2⁷ = 42868817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42868895 and 42868904.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236755 + ... + 236935.

It is an arithmetic number, because the mean of its divisors is an integer number (1893528).

Almost surely, 2^42868945 is an apocalyptic number.

It is an amenable number.

42868945 is a deficient number, since it is larger than the sum of its proper divisors (17723951).

42868945 is a wasteful number, since it uses less digits than its factorization.

42868945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its digits is 552960, while the sum is 46.

The square root of 42868945 is about 6547.4380485805. The cubic root of 42868945 is about 349.9835230338.

It can be divided in two parts, 4286 and 8945, that added together give a palindrome (13231).

The spelling of 42868945 in words is "forty-two million, eight hundred sixty-eight thousand, nine hundred forty-five".