121620723 has 8 divisors (see below), whose sum is σ = 185326848. Its totient is φ = 69497544.

The previous prime is 121620713. The next prime is 121620731. The reversal of 121620723 is 327026121.

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

It is not a de Polignac number, because 121620723 - 2⁸ = 121620467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121620693 and 121620702.

It is not an unprimeable number, because it can be changed into a prime (121620713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2895711 + ... + 2895752.

It is an arithmetic number, because the mean of its divisors is an integer number (23165856).

Almost surely, 2^121620723 is an apocalyptic number.

121620723 is a deficient number, since it is larger than the sum of its proper divisors (63706125).

121620723 is an equidigital number, since it uses as much as digits as its factorization.

121620723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791473.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 121620723 is about 11028.1785894136. The cubic root of 121620723 is about 495.4530735947.

Adding to 121620723 its reverse (327026121), we get a palindrome (448646844).

The spelling of 121620723 in words is "one hundred twenty-one million, six hundred twenty thousand, seven hundred twenty-three".