42125266 has 4 divisors (see below), whose sum is σ = 63187902. Its totient is φ = 21062632.

The previous prime is 42125227. The next prime is 42125267. The reversal of 42125266 is 66252124.

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., 28398241 + 13727025 = 5329^2 + 3705^2 .

It is not an unprimeable number, because it can be changed into a prime (42125267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10531315 + ... + 10531318.

Almost surely, 2^42125266 is an apocalyptic number.

42125266 is a deficient number, since it is larger than the sum of its proper divisors (21062636).

42125266 is a wasteful number, since it uses less digits than its factorization.

42125266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21062635.

The product of its digits is 5760, while the sum is 28.

The square root of 42125266 is about 6490.3979847156. The cubic root of 42125266 is about 347.9478992332.

The spelling of 42125266 in words is "forty-two million, one hundred twenty-five thousand, two hundred sixty-six".