1332120420 has 72 divisors (see below), whose sum is σ = 4049136000. Its totient is φ = 354496320.

The previous prime is 1332120409. The next prime is 1332120421. The reversal of 1332120420 is 240212331.

1332120420 is a `hidden beast` number, since 1 + 33 + 212 + 0 + 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 = 1332120393 and 1332120402.

It is not an unprimeable number, because it can be changed into a prime (1332120421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82405 + ... + 97235.

It is an arithmetic number, because the mean of its divisors is an integer number (56238000).

Almost surely, 2^1332120420 is an apocalyptic number.

1332120420 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 1332120420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2024568000).

1332120420 is an abundant number, since it is smaller than the sum of its proper divisors (2717015580).

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

1332120420 is a wasteful number, since it uses less digits than its factorization.

1332120420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15345 (or 15340 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1332120420 is about 36498.2248883422. The cubic root of 1332120420 is about 1100.3085690803.

Adding to 1332120420 its reverse (240212331), we get a palindrome (1572332751).

The spelling of 1332120420 in words is "one billion, three hundred thirty-two million, one hundred twenty thousand, four hundred twenty".