123747321 has 16 divisors (see below), whose sum is σ = 172388160. Its totient is φ = 78859200.

The previous prime is 123747313. The next prime is 123747353.

123747321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 123747321 - 2³ = 123747313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123747121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1746 + ... + 15828.

It is an arithmetic number, because the mean of its divisors is an integer number (10774260).

Almost surely, 2^123747321 is an apocalyptic number.

It is an amenable number.

123747321 is a deficient number, since it is larger than the sum of its proper divisors (48640839).

123747321 is a wasteful number, since it uses less digits than its factorization.

123747321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14216.

The product of its digits is 7056, while the sum is 30.

The square root of 123747321 is about 11124.1773178964. The cubic root of 123747321 is about 498.3241506668.

The spelling of 123747321 in words is "one hundred twenty-three million, seven hundred forty-seven thousand, three hundred twenty-one".