42181016 has 16 divisors (see below), whose sum is σ = 79979400. Its totient is φ = 20853184.

The previous prime is 42181001. The next prime is 42181019. The reversal of 42181016 is 61018124.

It is a super-2 number, since 2×42181016² = 3558476221584512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42180982 and 42181000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42181019) 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, 28910 + ... + 30333.

Almost surely, 2^42181016 is an apocalyptic number.

It is an amenable number.

42181016 is a deficient number, since it is larger than the sum of its proper divisors (37798384).

42181016 is a wasteful number, since it uses less digits than its factorization.

42181016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59338 (or 59334 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 42181016 is about 6494.6913706503. The cubic root of 42181016 is about 348.1013269038.

The spelling of 42181016 in words is "forty-two million, one hundred eighty-one thousand, sixteen".