121404130042 has 16 divisors (see below), whose sum is σ = 196120264032. Its totient is φ = 56030989680.

The previous prime is 121404129983. The next prime is 121404130049. The reversal of 121404130042 is 240031404121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121404129995 and 121404130022.

It is not an unprimeable number, because it can be changed into a prime (121404130049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360417 + ... + 1446907.

It is an arithmetic number, because the mean of its divisors is an integer number (12257516502).

Almost surely, 2^121404130042 is an apocalyptic number.

121404130042 is a deficient number, since it is larger than the sum of its proper divisors (74716133990).

121404130042 is a wasteful number, since it uses less digits than its factorization.

121404130042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140493.

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

Adding to 121404130042 its reverse (240031404121), we get a palindrome (361435534163).

The spelling of 121404130042 in words is "one hundred twenty-one billion, four hundred four million, one hundred thirty thousand, forty-two".