123621367 has 4 divisors (see below), whose sum is σ = 123649416. Its totient is φ = 123593320.

The previous prime is 123621349. The next prime is 123621383. The reversal of 123621367 is 763126321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123621367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123621347) 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, 5809 + ... + 16762.

It is an arithmetic number, because the mean of its divisors is an integer number (30912354).

Almost surely, 2^123621367 is an apocalyptic number.

123621367 is a deficient number, since it is larger than the sum of its proper divisors (28049).

123621367 is an equidigital number, since it uses as much as digits as its factorization.

123621367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28048.

The product of its digits is 9072, while the sum is 31.

The square root of 123621367 is about 11118.5146040287. The cubic root of 123621367 is about 498.1550231612.

Adding to 123621367 its reverse (763126321), we get a palindrome (886747688).

The spelling of 123621367 in words is "one hundred twenty-three million, six hundred twenty-one thousand, three hundred sixty-seven".