400003203442 has 8 divisors (see below), whose sum is σ = 604031683500. Its totient is φ = 198659308944.

The previous prime is 400003203407. The next prime is 400003203443. The reversal of 400003203442 is 244302300004.

It can be written as a sum of positive squares in 2 ways, for example, as 361307985921 + 38695217521 = 601089^2 + 196711^2 .

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

It is not an unprimeable number, because it can be changed into a prime (400003203443) 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, 671146017 + ... + 671146612.

Almost surely, 2^400003203442 is an apocalyptic number.

400003203442 is a deficient number, since it is larger than the sum of its proper divisors (204028480058).

400003203442 is a wasteful number, since it uses less digits than its factorization.

400003203442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342292780.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 400003203442 its reverse (244302300004), we get a palindrome (644305503446).

The spelling of 400003203442 in words is "four hundred billion, three million, two hundred three thousand, four hundred forty-two".