400000042342 has 8 divisors (see below), whose sum is σ = 600762454776. Its totient is φ = 199745890752.

The previous prime is 400000042319. The next prime is 400000042399. The reversal of 400000042342 is 243240000004.

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, 127063243 + ... + 127066390.

It is an arithmetic number, because the mean of its divisors is an integer number (75095306847).

Almost surely, 2^400000042342 is an apocalyptic number.

400000042342 is a deficient number, since it is larger than the sum of its proper divisors (200762412434).

400000042342 is a wasteful number, since it uses less digits than its factorization.

400000042342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254130422.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 400000042342 its reverse (243240000004), we get a palindrome (643240042346).

The spelling of 400000042342 in words is "four hundred billion, forty-two thousand, three hundred forty-two".