123001405 has 8 divisors (see below), whose sum is σ = 148764672. Its totient is φ = 97625808.

The previous prime is 123001391. The next prime is 123001453. The reversal of 123001405 is 504100321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123001405 - 2⁹ = 123000893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96217 + ... + 97486.

It is an arithmetic number, because the mean of its divisors is an integer number (18595584).

Almost surely, 2^123001405 is an apocalyptic number.

It is an amenable number.

123001405 is a deficient number, since it is larger than the sum of its proper divisors (25763267).

123001405 is a wasteful number, since it uses less digits than its factorization.

123001405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193835.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 123001405 is about 11090.5998485204. The cubic root of 123001405 is about 497.3208769055.

Adding to 123001405 its reverse (504100321), we get a palindrome (627101726).

The spelling of 123001405 in words is "one hundred twenty-three million, one thousand, four hundred five".