400432235233442 has 8 divisors (see below), whose sum is σ = 621360365017500. Its totient is φ = 193312113560944.

The previous prime is 400432235233379. The next prime is 400432235233451. The reversal of 400432235233442 is 244332532234004.

It can be written as a sum of positive squares in 2 ways, for example, as 381723245232121 + 18708990001321 = 19537739^2 + 4325389^2 .

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 400432235233442.

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, 3452002027817 + ... + 3452002027932.

Almost surely, 2^{400432235233442} is an apocalyptic number.

400432235233442 is a deficient number, since it is larger than the sum of its proper divisors (220928129784058).

400432235233442 is a wasteful number, since it uses less digits than its factorization.

400432235233442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6904004055780.

The product of its (nonzero) digits is 1658880, while the sum is 41.

Adding to 400432235233442 its reverse (244332532234004), we get a palindrome (644764767467446).

The spelling of 400432235233442 in words is "four hundred trillion, four hundred thirty-two billion, two hundred thirty-five million, two hundred thirty-three thousand, four hundred forty-two".