42216754 has 4 divisors (see below), whose sum is σ = 63325134. Its totient is φ = 21108376.

The previous prime is 42216751. The next prime is 42216781. The reversal of 42216754 is 45761224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41951529 + 265225 = 6477^2 + 515^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42216751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10554187 + ... + 10554190.

Almost surely, 2^42216754 is an apocalyptic number.

42216754 is a deficient number, since it is larger than the sum of its proper divisors (21108380).

42216754 is a wasteful number, since it uses less digits than its factorization.

42216754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21108379.

The product of its digits is 13440, while the sum is 31.

The square root of 42216754 is about 6497.4421120930. The cubic root of 42216754 is about 348.1996091379.

Adding to 42216754 its reverse (45761224), we get a palindrome (87977978).

The spelling of 42216754 in words is "forty-two million, two hundred sixteen thousand, seven hundred fifty-four".