42531266 has 4 divisors (see below), whose sum is σ = 63796902. Its totient is φ = 21265632.

The previous prime is 42531211. The next prime is 42531277. The reversal of 42531266 is 66213524.

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., 27931225 + 14600041 = 5285^2 + 3821^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10632815 + ... + 10632818.

Almost surely, 2^42531266 is an apocalyptic number.

42531266 is a deficient number, since it is larger than the sum of its proper divisors (21265636).

42531266 is a wasteful number, since it uses less digits than its factorization.

42531266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21265635.

The product of its digits is 8640, while the sum is 29.

The square root of 42531266 is about 6521.5999570658. The cubic root of 42531266 is about 349.0621586426.

The spelling of 42531266 in words is "forty-two million, five hundred thirty-one thousand, two hundred sixty-six".