123040007 has 4 divisors (see below), whose sum is σ = 123063936. Its totient is φ = 123016080.

The previous prime is 123040003. The next prime is 123040037. The reversal of 123040007 is 700040321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123040007 - 2² = 123040003 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 (123040003) 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, 743 + ... + 15704.

It is an arithmetic number, because the mean of its divisors is an integer number (30765984).

Almost surely, 2^123040007 is an apocalyptic number.

123040007 is a deficient number, since it is larger than the sum of its proper divisors (23929).

123040007 is an equidigital number, since it uses as much as digits as its factorization.

123040007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23928.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 123040007 is about 11092.3400146227. The cubic root of 123040007 is about 497.3728968331.

Adding to 123040007 its reverse (700040321), we get a palindrome (823080328).

The spelling of 123040007 in words is "one hundred twenty-three million, forty thousand, seven".