40521266 has 8 divisors (see below), whose sum is σ = 60931740. Its totient is φ = 20210688.

The previous prime is 40521241. The next prime is 40521269. The reversal of 40521266 is 66212504.

It can be written as a sum of positive squares in 2 ways, for example, as 38502025 + 2019241 = 6205^2 + 1421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40521269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23951 + ... + 25586.

Almost surely, 2^40521266 is an apocalyptic number.

40521266 is a deficient number, since it is larger than the sum of its proper divisors (20410474).

40521266 is a wasteful number, since it uses less digits than its factorization.

40521266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49948.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40521266 is about 6365.6316261625. The cubic root of 40521266 is about 343.4743696389.

The spelling of 40521266 in words is "forty million, five hundred twenty-one thousand, two hundred sixty-six".