401240306 has 8 divisors (see below), whose sum is σ = 608065500. Its totient is φ = 198551808.

The previous prime is 401240303. The next prime is 401240327. The reversal of 401240306 is 603042104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 399640081 + 1600225 = 19991^2 + 1265^2 .

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 (401240303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033931 + ... + 1034318.

Almost surely, 2^401240306 is an apocalyptic number.

401240306 is a deficient number, since it is larger than the sum of its proper divisors (206825194).

401240306 is a wasteful number, since it uses less digits than its factorization.

401240306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068348.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 401240306 is about 20030.9836503353. The cubic root of 401240306 is about 737.5670683428.

The spelling of 401240306 in words is "four hundred one million, two hundred forty thousand, three hundred six".