2121403024042 has 8 divisors (see below), whose sum is σ = 3268107361476. Its totient is φ = 1032033903552.

The previous prime is 2121403024033. The next prime is 2121403024049. The reversal of 2121403024042 is 2404203041212.

It can be written as a sum of positive squares in 2 ways, for example, as 2121185432041 + 217592001 = 1456429^2 + 14751^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2121403023998 and 2121403024016.

It is not an unprimeable number, because it can be changed into a prime (2121403024049) 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, 14333804143 + ... + 14333804290.

Almost surely, 2^{2121403024042} is an apocalyptic number.

2121403024042 is a deficient number, since it is larger than the sum of its proper divisors (1146704337434).

2121403024042 is a wasteful number, since it uses less digits than its factorization.

2121403024042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28667608472.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 2121403024042 its reverse (2404203041212), we get a palindrome (4525606065254).

The spelling of 2121403024042 in words is "two trillion, one hundred twenty-one billion, four hundred three million, twenty-four thousand, forty-two".