2040123321442 has 4 divisors (see below), whose sum is σ = 3060184982166. Its totient is φ = 1020061660720.

The previous prime is 2040123321427. The next prime is 2040123321493. The reversal of 2040123321442 is 2441233210402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1139729191561 + 900394129881 = 1067581^2 + 948891^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2040123321442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510030830359 + ... + 510030830362.

Almost surely, 2^{2040123321442} is an apocalyptic number.

2040123321442 is a deficient number, since it is larger than the sum of its proper divisors (1020061660724).

2040123321442 is a wasteful number, since it uses less digits than its factorization.

2040123321442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020061660723.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2040123321442 its reverse (2441233210402), we get a palindrome (4481356531844).

The spelling of 2040123321442 in words is "two trillion, forty billion, one hundred twenty-three million, three hundred twenty-one thousand, four hundred forty-two".