42180016 has 10 divisors (see below), whose sum is σ = 81723812. Its totient is φ = 21090000.

The previous prime is 42180013. The next prime is 42180023. The reversal of 42180016 is 61008124.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (42180013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318110 + ... + 1318141.

Almost surely, 2^42180016 is an apocalyptic number.

It is an amenable number.

42180016 is a deficient number, since it is larger than the sum of its proper divisors (39543796).

42180016 is a wasteful number, since it uses less digits than its factorization.

42180016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636259 (or 2636253 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 42180016 is about 6494.6143842418. The cubic root of 42180016 is about 348.0985760290.

The spelling of 42180016 in words is "forty-two million, one hundred eighty thousand, sixteen".