123084421 has 2 divisors, whose sum is σ = 123084422. Its totient is φ = 123084420.

The previous prime is 123084349. The next prime is 123084457. The reversal of 123084421 is 124480321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113848900 + 9235521 = 10670^2 + 3039^2 .

It is a cyclic number.

It is not a de Polignac number, because 123084421 - 2¹¹ = 123082373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123084491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61542210 + 61542211.

It is an arithmetic number, because the mean of its divisors is an integer number (61542211).

Almost surely, 2^123084421 is an apocalyptic number.

It is an amenable number.

123084421 is a deficient number, since it is larger than the sum of its proper divisors (1).

123084421 is an equidigital number, since it uses as much as digits as its factorization.

123084421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 123084421 is about 11094.3418461845. The cubic root of 123084421 is about 497.4327355336.

The spelling of 123084421 in words is "one hundred twenty-three million, eighty-four thousand, four hundred twenty-one".