123040408 has 16 divisors (see below), whose sum is σ = 234145080. Its totient is φ = 60601728.

The previous prime is 123040403. The next prime is 123040427. The reversal of 123040408 is 804040321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123040403) 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, 114241 + ... + 115312.

Almost surely, 2^123040408 is an apocalyptic number.

It is an amenable number.

123040408 is a deficient number, since it is larger than the sum of its proper divisors (111104672).

123040408 is a wasteful number, since it uses less digits than its factorization.

123040408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229626 (or 229622 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 123040408 is about 11092.3580901448. The cubic root of 123040408 is about 497.3734371623.

Adding to 123040408 its reverse (804040321), we get a palindrome (927080729).

The spelling of 123040408 in words is "one hundred twenty-three million, forty thousand, four hundred eight".