1231023042042 has 16 divisors (see below), whose sum is σ = 2479758647520. Its totient is φ = 407388920112.

The previous prime is 1231023041993. The next prime is 1231023042049. The reversal of 1231023042042 is 2402403201321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1231023042049) 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, 738022573 + ... + 738024240.

It is an arithmetic number, because the mean of its divisors is an integer number (154984915470).

Almost surely, 2^{1231023042042} is an apocalyptic number.

1231023042042 is an abundant number, since it is smaller than the sum of its proper divisors (1248735605478).

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

1231023042042 is a wasteful number, since it uses less digits than its factorization.

1231023042042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476046957.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1231023042042 its reverse (2402403201321), we get a palindrome (3633426243363).

The spelling of 1231023042042 in words is "one trillion, two hundred thirty-one billion, twenty-three million, forty-two thousand, forty-two".