121644634 has 8 divisors (see below), whose sum is σ = 184665600. Its totient is φ = 60089436.

The previous prime is 121644623. The next prime is 121644659. The reversal of 121644634 is 436446121.

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 = 121644596 and 121644605.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 366234 + ... + 366565.

It is an arithmetic number, because the mean of its divisors is an integer number (23083200).

Almost surely, 2^121644634 is an apocalyptic number.

121644634 is a deficient number, since it is larger than the sum of its proper divisors (63020966).

121644634 is an equidigital number, since it uses as much as digits as its factorization.

121644634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732884.

The product of its digits is 13824, while the sum is 31.

The square root of 121644634 is about 11029.2626226779. The cubic root of 121644634 is about 495.4855406553.

The spelling of 121644634 in words is "one hundred twenty-one million, six hundred forty-four thousand, six hundred thirty-four".