400194742 has 8 divisors (see below), whose sum is σ = 602869176. Its totient is φ = 199238352.

The previous prime is 400194731. The next prime is 400194757. The reversal of 400194742 is 247491004.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428928 + ... + 429859.

It is an arithmetic number, because the mean of its divisors is an integer number (75358647).

Almost surely, 2^400194742 is an apocalyptic number.

400194742 is a deficient number, since it is larger than the sum of its proper divisors (202674434).

400194742 is a wasteful number, since it uses less digits than its factorization.

400194742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859022.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 400194742 is about 20004.8679575747. The cubic root of 400194742 is about 736.9258529388.

The spelling of 400194742 in words is "four hundred million, one hundred ninety-four thousand, seven hundred forty-two".