13120140400042 has 8 divisors (see below), whose sum is σ = 21194072953956. Its totient is φ = 6055449415392.

The previous prime is 13120140400013. The next prime is 13120140400049. The reversal of 13120140400042 is 24000404102131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13117007871081 + 3132528961 = 3621741^2 + 55969^2 .

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 = 13120140399986 and 13120140400022.

It is not an unprimeable number, because it can be changed into a prime (13120140400049) 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, 252310392283 + ... + 252310392334.

Almost surely, 2^{13120140400042} is an apocalyptic number.

13120140400042 is a deficient number, since it is larger than the sum of its proper divisors (8073932553914).

13120140400042 is a wasteful number, since it uses less digits than its factorization.

13120140400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504620784632.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 13120140400042 its reverse (24000404102131), we get a palindrome (37120544502173).

The spelling of 13120140400042 in words is "thirteen trillion, one hundred twenty billion, one hundred forty million, four hundred thousand, forty-two".