121753635742 has 32 divisors (see below), whose sum is σ = 187170873120. Its totient is φ = 59385187200.

The previous prime is 121753635719. The next prime is 121753635763. The reversal of 121753635742 is 247536357121.

It is a junction number, because it is equal to n+sod(n) for n = 121753635692 and 121753635701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6243984 + ... + 6263452.

It is an arithmetic number, because the mean of its divisors is an integer number (5849089785).

Almost surely, 2^121753635742 is an apocalyptic number.

121753635742 is a deficient number, since it is larger than the sum of its proper divisors (65417237378).

121753635742 is a wasteful number, since it uses less digits than its factorization.

121753635742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20028.

The product of its digits is 1058400, while the sum is 46.

The spelling of 121753635742 in words is "one hundred twenty-one billion, seven hundred fifty-three million, six hundred thirty-five thousand, seven hundred forty-two".