42216026 has 16 divisors (see below), whose sum is σ = 64636488. Its totient is φ = 20673600.

The previous prime is 42216023. The next prime is 42216029. The reversal of 42216026 is 62061224.

It is an interprime number because it is at equal distance from previous prime (42216023) and next prime (42216029).

It can be written as a sum of positive squares in 4 ways, for example, as 40972801 + 1243225 = 6401^2 + 1115^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42215992 and 42216010.

It is not an unprimeable number, because it can be changed into a prime (42216023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35156 + ... + 36336.

Almost surely, 2^42216026 is an apocalyptic number.

42216026 is a deficient number, since it is larger than the sum of its proper divisors (22420462).

42216026 is a wasteful number, since it uses less digits than its factorization.

42216026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 42216026 is about 6497.3860898057. The cubic root of 42216026 is about 348.1976076358.

The spelling of 42216026 in words is "forty-two million, two hundred sixteen thousand, twenty-six".