400124066 has 8 divisors (see below), whose sum is σ = 612956160. Its totient is φ = 195805348.

The previous prime is 400124033. The next prime is 400124069. The reversal of 400124066 is 660421004.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400124069) 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, 2128226 + ... + 2128413.

It is an arithmetic number, because the mean of its divisors is an integer number (76619520).

Almost surely, 2^400124066 is an apocalyptic number.

400124066 is a deficient number, since it is larger than the sum of its proper divisors (212832094).

400124066 is a wasteful number, since it uses less digits than its factorization.

400124066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256688.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 400124066 is about 20003.1014095315. The cubic root of 400124066 is about 736.8824690289.

The spelling of 400124066 in words is "four hundred million, one hundred twenty-four thousand, sixty-six".