42881626 has 8 divisors (see below), whose sum is σ = 64528884. Its totient is φ = 21372000.

The previous prime is 42881623. The next prime is 42881627. The reversal of 42881626 is 62618824.

It can be written as a sum of positive squares in 2 ways, for example, as 26471025 + 16410601 = 5145^2 + 4051^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42881623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33625 + ... + 34876.

Almost surely, 2^42881626 is an apocalyptic number.

42881626 is a deficient number, since it is larger than the sum of its proper divisors (21647258).

42881626 is a wasteful number, since it uses less digits than its factorization.

42881626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68816.

The product of its digits is 36864, while the sum is 37.

The square root of 42881626 is about 6548.4063710188. The cubic root of 42881626 is about 350.0180290033.

The spelling of 42881626 in words is "forty-two million, eight hundred eighty-one thousand, six hundred twenty-six".