122420 has 12 divisors (see below), whose sum is σ = 257124. Its totient is φ = 48960.

The previous prime is 122401. The next prime is 122443. The reversal of 122420 is 24221.

122420 = T₁₉₉ + T₂₀₀ + ... + T₂₀₄.

122420 is nontrivially palindromic in base 3 and base 6.

It can be written as a sum of positive squares in 2 ways, for example, as 27556 + 94864 = 166^2 + 308^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3041 + ... + 3080.

It is an arithmetic number, because the mean of its divisors is an integer number (21427).

2¹²²⁴²⁰ is an apocalyptic number.

122420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122420 is an abundant number, since it is smaller than the sum of its proper divisors (134704).

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

122420 is a wasteful number, since it uses less digits than its factorization.

122420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130 (or 6128 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 122420 is about 349.8856956207. The cubic root of 122420 is about 49.6536057624.

Adding to 122420 its reverse (24221), we get a palindrome (146641).

The spelling of 122420 in words is "one hundred twenty-two thousand, four hundred twenty", and thus it is an iban number.