1242031120 has 120 divisors (see below), whose sum is σ = 3277290240. Its totient is φ = 436972800.

The previous prime is 1242031093. The next prime is 1242031199. The reversal of 1242031120 is 211302421.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1242031094 and 1242031103.

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 23 ways as a sum of consecutive naturals, for example, 298011 + ... + 302149.

It is an arithmetic number, because the mean of its divisors is an integer number (27310752).

Almost surely, 2^1242031120 is an apocalyptic number.

1242031120 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 1242031120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638645120).

1242031120 is an abundant number, since it is smaller than the sum of its proper divisors (2035259120).

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

1242031120 is a wasteful number, since it uses less digits than its factorization.

1242031120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205 (or 4188 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1242031120 is about 35242.4618890338. The cubic root of 1242031120 is about 1074.9233390438.

Adding to 1242031120 its reverse (211302421), we get a palindrome (1453333541).

The spelling of 1242031120 in words is "one billion, two hundred forty-two million, thirty-one thousand, one hundred twenty".