122428 has 12 divisors (see below), whose sum is σ = 216832. Its totient is φ = 60480.

The previous prime is 122401. The next prime is 122443. The reversal of 122428 is 824221.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388 + ... + 628.

2¹²²⁴²⁸ is an apocalyptic number.

It is an amenable number.

122428 is a deficient number, since it is larger than the sum of its proper divisors (94404).

122428 is a wasteful number, since it uses less digits than its factorization.

122428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 370 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 122428 is about 349.8971277390. The cubic root of 122428 is about 49.6546873401.

Adding to 122428 its reverse (824221), we get a palindrome (946649).

The spelling of 122428 in words is "one hundred twenty-two thousand, four hundred twenty-eight".