123450621 has 16 divisors (see below), whose sum is σ = 191666304. Its totient is φ = 69211584.

The previous prime is 123450599. The next prime is 123450629. The reversal of 123450621 is 126054321.

It is not a de Polignac number, because 123450621 - 2⁷ = 123450493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123450591 and 123450600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123450629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54346 + ... + 56571.

It is an arithmetic number, because the mean of its divisors is an integer number (11979144).

Almost surely, 2^123450621 is an apocalyptic number.

It is an amenable number.

123450621 is a deficient number, since it is larger than the sum of its proper divisors (68215683).

123450621 is a wasteful number, since it uses less digits than its factorization.

123450621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110980.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 123450621 is about 11110.8334970874. The cubic root of 123450621 is about 497.9255666887.

The spelling of 123450621 in words is "one hundred twenty-three million, four hundred fifty thousand, six hundred twenty-one".