122403420 has 96 divisors (see below), whose sum is σ = 385539840. Its totient is φ = 32235840.

The previous prime is 122403397. The next prime is 122403431. The reversal of 122403420 is 24304221.

122403420 is a `hidden beast` number, since 1 + 2 + 240 + 3 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 122403393 and 122403402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43455 + ... + 46185.

It is an arithmetic number, because the mean of its divisors is an integer number (4016040).

Almost surely, 2^122403420 is an apocalyptic number.

122403420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122403420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192769920).

122403420 is an abundant number, since it is smaller than the sum of its proper divisors (263136420).

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

122403420 is a wasteful number, since it uses less digits than its factorization.

122403420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832 (or 2824 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 122403420 is about 11063.6079106230. The cubic root of 122403420 is about 496.5136404281.

Adding to 122403420 its reverse (24304221), we get a palindrome (146707641).

The spelling of 122403420 in words is "one hundred twenty-two million, four hundred three thousand, four hundred twenty".