42881746 has 12 divisors (see below), whose sum is σ = 67887342. Its totient is φ = 20312064.

The previous prime is 42881743. The next prime is 42881767. The reversal of 42881746 is 64718824.

It can be written as a sum of positive squares in only one way, i.e., 40513225 + 2368521 = 6365^2 + 1539^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42881699 and 42881708.

It is not an unprimeable number, because it can be changed into a prime (42881743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28975 + ... + 30418.

Almost surely, 2^42881746 is an apocalyptic number.

42881746 is a deficient number, since it is larger than the sum of its proper divisors (25005596).

42881746 is a wasteful number, since it uses less digits than its factorization.

42881746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59433 (or 59414 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 42881746 is about 6548.4155335470. The cubic root of 42881746 is about 350.0183554999.

The spelling of 42881746 in words is "forty-two million, eight hundred eighty-one thousand, seven hundred forty-six".