121730784134 has 8 divisors (see below), whose sum is σ = 188892596160. Its totient is φ = 58766585416.

The previous prime is 121730784127. The next prime is 121730784179. The reversal of 121730784134 is 431487037121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121730784134² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121730784091 and 121730784100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049403254 + ... + 1049403369.

It is an arithmetic number, because the mean of its divisors is an integer number (23611574520).

Almost surely, 2^121730784134 is an apocalyptic number.

121730784134 is a deficient number, since it is larger than the sum of its proper divisors (67161812026).

121730784134 is a wasteful number, since it uses less digits than its factorization.

121730784134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098806654.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 121730784134 in words is "one hundred twenty-one billion, seven hundred thirty million, seven hundred eighty-four thousand, one hundred thirty-four".