123423629 has 4 divisors (see below), whose sum is σ = 141055584. Its totient is φ = 105791676.

The previous prime is 123423607. The next prime is 123423637. The reversal of 123423629 is 926324321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123423629 - 2¹⁶ = 123358093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123423595 and 123423604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123423229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8815967 + ... + 8815980.

It is an arithmetic number, because the mean of its divisors is an integer number (35263896).

Almost surely, 2^123423629 is an apocalyptic number.

It is an amenable number.

123423629 is a deficient number, since it is larger than the sum of its proper divisors (17631955).

123423629 is an equidigital number, since it uses as much as digits as its factorization.

123423629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17631954.

The product of its digits is 15552, while the sum is 32.

The square root of 123423629 is about 11109.6187603356. The cubic root of 123423629 is about 497.8892742115.

The spelling of 123423629 in words is "one hundred twenty-three million, four hundred twenty-three thousand, six hundred twenty-nine".