401243266 has 8 divisors (see below), whose sum is σ = 604493820. Its totient is φ = 199745328.

The previous prime is 401243251. The next prime is 401243309. The reversal of 401243266 is 662342104.

It can be written as a sum of positive squares in 2 ways, for example, as 277922241 + 123321025 = 16671^2 + 11105^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437581 + ... + 438496.

Almost surely, 2^401243266 is an apocalyptic number.

401243266 is a deficient number, since it is larger than the sum of its proper divisors (203250554).

401243266 is a wasteful number, since it uses less digits than its factorization.

401243266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876308.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 401243266 is about 20031.0575357368. The cubic root of 401243266 is about 737.5688820466.

It can be divided in two parts, 4012 and 43266, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 401243266 in words is "four hundred one million, two hundred forty-three thousand, two hundred sixty-six".