400203123002 has 16 divisors (see below), whose sum is σ = 601942380000. Its totient is φ = 199556321328.

The previous prime is 400203122993. The next prime is 400203123007. The reversal of 400203123002 is 200321302004.

It is not an unprimeable number, because it can be changed into a prime (400203123007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058249 + ... + 1385747.

It is an arithmetic number, because the mean of its divisors is an integer number (37621398750).

Almost surely, 2^400203123002 is an apocalyptic number.

400203123002 is a deficient number, since it is larger than the sum of its proper divisors (201739256998).

400203123002 is a wasteful number, since it uses less digits than its factorization.

400203123002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329165.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 400203123002 its reverse (200321302004), we get a palindrome (600524425006).

The spelling of 400203123002 in words is "four hundred billion, two hundred three million, one hundred twenty-three thousand, two".