42207118 has 4 divisors (see below), whose sum is σ = 63310680. Its totient is φ = 21103558.

The previous prime is 42207103. The next prime is 42207131. The reversal of 42207118 is 81170224.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 42207092 and 42207101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551778 + ... + 10551781.

It is an arithmetic number, because the mean of its divisors is an integer number (15827670).

Almost surely, 2^42207118 is an apocalyptic number.

42207118 is a deficient number, since it is larger than the sum of its proper divisors (21103562).

42207118 is a wasteful number, since it uses less digits than its factorization.

42207118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21103561.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 42207118 is about 6496.7005472009. The cubic root of 42207118 is about 348.1731148639.

The spelling of 42207118 in words is "forty-two million, two hundred seven thousand, one hundred eighteen".