123606420 has 72 divisors (see below), whose sum is σ = 402613344. Its totient is φ = 28252224.

The previous prime is 123606409. The next prime is 123606437. The reversal of 123606420 is 24606321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18082 + ... + 23961.

It is an arithmetic number, because the mean of its divisors is an integer number (5591852).

Almost surely, 2^123606420 is an apocalyptic number.

123606420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123606420 is an abundant number, since it is smaller than the sum of its proper divisors (279006924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123606420 is a wasteful number, since it uses less digits than its factorization.

123606420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42069 (or 42060 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 123606420 is about 11117.8424165843. The cubic root of 123606420 is about 498.1349451239.

Subtracting from 123606420 its reverse (24606321), we obtain a palindrome (99000099).

The spelling of 123606420 in words is "one hundred twenty-three million, six hundred six thousand, four hundred twenty".