2100321404042 has 8 divisors (see below), whose sum is σ = 3150499598532. Its totient is φ = 1050154871200.

The previous prime is 2100321404017. The next prime is 2100321404099. The reversal of 2100321404042 is 2404041230012.

It can be written as a sum of positive squares in 2 ways, for example, as 2018845981321 + 81475422721 = 1420861^2 + 285439^2 .

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

It is a super-2 number, since 2×2100321404042² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100321403999 and 2100321404017.

It is an unprimeable number.

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, 2450309 + ... + 3194472.

Almost surely, 2^{2100321404042} is an apocalyptic number.

2100321404042 is a deficient number, since it is larger than the sum of its proper divisors (1050178194490).

2100321404042 is a wasteful number, since it uses less digits than its factorization.

2100321404042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830824.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 2100321404042 its reverse (2404041230012), we get a palindrome (4504362634054).

The spelling of 2100321404042 in words is "two trillion, one hundred billion, three hundred twenty-one million, four hundred four thousand, forty-two".