42210738 has 12 divisors (see below), whose sum is σ = 91456638. Its totient is φ = 14070240.

The previous prime is 42210733. The next prime is 42210743. The reversal of 42210738 is 83701224.

It is an interprime number because it is at equal distance from previous prime (42210733) and next prime (42210743).

It can be written as a sum of positive squares in only one way, i.e., 34609689 + 7601049 = 5883^2 + 2757^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (42210731) 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, 1172503 + ... + 1172538.

Almost surely, 2^42210738 is an apocalyptic number.

42210738 is an abundant number, since it is smaller than the sum of its proper divisors (49245900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42210738 is a wasteful number, since it uses less digits than its factorization.

42210738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345049 (or 2345046 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 42210738 is about 6496.9791441869. The cubic root of 42210738 is about 348.1830685613.

The spelling of 42210738 in words is "forty-two million, two hundred ten thousand, seven hundred thirty-eight".