121479646 has 4 divisors (see below), whose sum is σ = 182219472. Its totient is φ = 60739822.

The previous prime is 121479623. The next prime is 121479647. The reversal of 121479646 is 646974121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646974121 = 509 ⋅1271069.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 121479599 and 121479608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121479647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30369910 + ... + 30369913.

It is an arithmetic number, because the mean of its divisors is an integer number (45554868).

Almost surely, 2^121479646 is an apocalyptic number.

121479646 is a deficient number, since it is larger than the sum of its proper divisors (60739826).

121479646 is an equidigital number, since it uses as much as digits as its factorization.

121479646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60739825.

The product of its digits is 72576, while the sum is 40.

The square root of 121479646 is about 11021.7805276643. The cubic root of 121479646 is about 495.2614284122.

The spelling of 121479646 in words is "one hundred twenty-one million, four hundred seventy-nine thousand, six hundred forty-six".