121656134 has 4 divisors (see below), whose sum is σ = 182484204. Its totient is φ = 60828066.

The previous prime is 121656133. The next prime is 121656167. The reversal of 121656134 is 431656121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 121656097 and 121656106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121656133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30414032 + ... + 30414035.

It is an arithmetic number, because the mean of its divisors is an integer number (45621051).

Almost surely, 2^121656134 is an apocalyptic number.

121656134 is a deficient number, since it is larger than the sum of its proper divisors (60828070).

121656134 is an equidigital number, since it uses as much as digits as its factorization.

121656134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60828069.

The product of its digits is 4320, while the sum is 29.

The square root of 121656134 is about 11029.7839507399. The cubic root of 121656134 is about 495.5011541791.

The spelling of 121656134 in words is "one hundred twenty-one million, six hundred fifty-six thousand, one hundred thirty-four".