1242110520 has 96 divisors (see below), whose sum is σ = 4613562720. Its totient is φ = 283910400.

The previous prime is 1242110437. The next prime is 1242110531. The reversal of 1242110520 is 250112421.

1242110520 is a `hidden beast` number, since 124 + 21 + 1 + 0 + 520 = 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 = 1242110493 and 1242110502.

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 23 ways as a sum of consecutive naturals, for example, 243931 + ... + 248970.

It is an arithmetic number, because the mean of its divisors is an integer number (48057945).

Almost surely, 2^1242110520 is an apocalyptic number.

1242110520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242110520 is an abundant number, since it is smaller than the sum of its proper divisors (3371452200).

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

1242110520 is a wasteful number, since it uses less digits than its factorization.

1242110520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492925 (or 492918 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1242110520 is about 35243.5883530608. The cubic root of 1242110520 is about 1074.9462442923.

Adding to 1242110520 its reverse (250112421), we get a palindrome (1492222941).

The spelling of 1242110520 in words is "one billion, two hundred forty-two million, one hundred ten thousand, five hundred twenty".