400380742 has 8 divisors (see below), whose sum is σ = 601928136. Its totient is φ = 199738032.

The previous prime is 400380727. The next prime is 400380751. The reversal of 400380742 is 247083004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 400380742.

It is a congruent number.

It is an unprimeable number.

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, 225063 + ... + 226834.

It is an arithmetic number, because the mean of its divisors is an integer number (75241017).

Almost surely, 2^400380742 is an apocalyptic number.

400380742 is a deficient number, since it is larger than the sum of its proper divisors (201547394).

400380742 is a wasteful number, since it uses less digits than its factorization.

400380742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452342.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 400380742 is about 20009.5162860075. The cubic root of 400380742 is about 737.0400031800.

The spelling of 400380742 in words is "four hundred million, three hundred eighty thousand, seven hundred forty-two".