531420120 has 384 divisors, whose sum is σ = 2268864000. Its totient is φ = 104509440.

The previous prime is 531420107. The next prime is 531420137. The reversal of 531420120 is 21024135.

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 = 531420093 and 531420102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 526176 + ... + 527184.

It is an arithmetic number, because the mean of its divisors is an integer number (5908500).

Almost surely, 2^531420120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531420120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1134432000).

531420120 is an abundant number, since it is smaller than the sum of its proper divisors (1737443880).

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

531420120 is a wasteful number, since it uses less digits than its factorization.

531420120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 531420120 is about 23052.5512687858. The cubic root of 531420120 is about 809.9893917221.

Adding to 531420120 its reverse (21024135), we get a palindrome (552444255).

The spelling of 531420120 in words is "five hundred thirty-one million, four hundred twenty thousand, one hundred twenty".