400103433300421 has 4 divisors (see below), whose sum is σ = 400103473305600. Its totient is φ = 400103393295244.

The previous prime is 400103433300409. The next prime is 400103433300437. The reversal of 400103433300421 is 124003334301004.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400103433300421 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 400103433300421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400103433300451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9983970 + ... + 29998108.

It is an arithmetic number, because the mean of its divisors is an integer number (100025868326400).

Almost surely, 2^{400103433300421} is an apocalyptic number.

It is an amenable number.

400103433300421 is a deficient number, since it is larger than the sum of its proper divisors (40005179).

400103433300421 is a wasteful number, since it uses less digits than its factorization.

400103433300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40005178.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 400103433300421 its reverse (124003334301004), we get a palindrome (524106767601425).

The spelling of 400103433300421 in words is "four hundred trillion, one hundred three billion, four hundred thirty-three million, three hundred thousand, four hundred twenty-one".