123730407 has 12 divisors (see below), whose sum is σ = 178890504. Its totient is φ = 82409040.

The previous prime is 123730379. The next prime is 123730421. The reversal of 123730407 is 704037321.

It is not a de Polignac number, because 123730407 - 2⁷ = 123730279 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123730007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4557 + ... + 16377.

It is an arithmetic number, because the mean of its divisors is an integer number (14907542).

Almost surely, 2^123730407 is an apocalyptic number.

123730407 is a deficient number, since it is larger than the sum of its proper divisors (55160097).

123730407 is a wasteful number, since it uses less digits than its factorization.

123730407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990 (or 12987 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 123730407 is about 11123.4170559231. The cubic root of 123730407 is about 498.3014456938.

Adding to 123730407 its reverse (704037321), we get a palindrome (827767728).

The spelling of 123730407 in words is "one hundred twenty-three million, seven hundred thirty thousand, four hundred seven".