400120434001 has 4 divisors (see below), whose sum is σ = 400406440000. Its totient is φ = 399834428004.

The previous prime is 400120433983. The next prime is 400120434011. The reversal of 400120434001 is 100434021004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400120434001 - 2¹⁷ = 400120302929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400120434001.

It is not an unprimeable number, because it can be changed into a prime (400120434011) by changing a digit.

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, 143000901 + ... + 143003698.

It is an arithmetic number, because the mean of its divisors is an integer number (100101610000).

Almost surely, 2^400120434001 is an apocalyptic number.

It is an amenable number.

400120434001 is a deficient number, since it is larger than the sum of its proper divisors (286005999).

400120434001 is a wasteful number, since it uses less digits than its factorization.

400120434001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286005998.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 400120434001 its reverse (100434021004), we get a palindrome (500554455005).

The spelling of 400120434001 in words is "four hundred billion, one hundred twenty million, four hundred thirty-four thousand, one".