123075421 has 8 divisors (see below), whose sum is σ = 142024064. Its totient is φ = 104468400.

The previous prime is 123075413. The next prime is 123075437. The reversal of 123075421 is 124570321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123075421 - 2³ = 123075413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123078421) 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 7 ways as a sum of consecutive naturals, for example, 84630 + ... + 86071.

It is an arithmetic number, because the mean of its divisors is an integer number (17753008).

Almost surely, 2^123075421 is an apocalyptic number.

It is an amenable number.

123075421 is a deficient number, since it is larger than the sum of its proper divisors (18948643).

123075421 is a wasteful number, since it uses less digits than its factorization.

123075421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170811.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 123075421 is about 11093.9362266060. The cubic root of 123075421 is about 497.4206110537.

The spelling of 123075421 in words is "one hundred twenty-three million, seventy-five thousand, four hundred twenty-one".