406612123 has 4 divisors (see below), whose sum is σ = 408655600. Its totient is φ = 404568648.

The previous prime is 406612109. The next prime is 406612127. The reversal of 406612123 is 321216604.

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 406612123 - 2²⁵ = 373057691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406612127) 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, 1021440 + ... + 1021837.

It is an arithmetic number, because the mean of its divisors is an integer number (102163900).

Almost surely, 2^406612123 is an apocalyptic number.

406612123 is a deficient number, since it is larger than the sum of its proper divisors (2043477).

406612123 is a wasteful number, since it uses less digits than its factorization.

406612123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043476.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 406612123 is about 20164.6255358239. The cubic root of 406612123 is about 740.8440108183.

Adding to 406612123 its reverse (321216604), we get a palindrome (727828727).

The spelling of 406612123 in words is "four hundred six million, six hundred twelve thousand, one hundred twenty-three".