1404123121002 has 64 divisors (see below), whose sum is σ = 3467565331200. Its totient is φ = 377579317248.

The previous prime is 1404123120997. The next prime is 1404123121003. The reversal of 1404123121002 is 2001213214041.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1404123121002.

It is not an unprimeable number, because it can be changed into a prime (1404123121003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20031943 + ... + 20101914.

It is an arithmetic number, because the mean of its divisors is an integer number (54180708300).

Almost surely, 2^{1404123121002} is an apocalyptic number.

1404123121002 is an abundant number, since it is smaller than the sum of its proper divisors (2063442210198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1404123121002 is a wasteful number, since it uses less digits than its factorization.

1404123121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40133900 (or 40133886 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1404123121002 its reverse (2001213214041), we get a palindrome (3405336335043).

The spelling of 1404123121002 in words is "one trillion, four hundred four billion, one hundred twenty-three million, one hundred twenty-one thousand, two".