1242105300 has 72 divisors (see below), whose sum is σ = 3993147200. Its totient is φ = 331227360.

The previous prime is 1242105299. The next prime is 1242105301. The reversal of 1242105300 is 35012421.

1242105300 is a `hidden beast` number, since 124 + 2 + 10 + 530 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1242105299) and next prime (1242105301).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242105301) by changing a digit.

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, 227320 + ... + 232719.

Almost surely, 2^1242105300 is an apocalyptic number.

1242105300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242105300 is an abundant number, since it is smaller than the sum of its proper divisors (2751041900).

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

1242105300 is a wasteful number, since it uses less digits than its factorization.

1242105300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460062 (or 460049 counting only the distinct ones).

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

The square root of 1242105300 is about 35243.5142969597. The cubic root of 1242105300 is about 1074.9447384609.

Adding to 1242105300 its reverse (35012421), we get a palindrome (1277117721).

The spelling of 1242105300 in words is "one billion, two hundred forty-two million, one hundred five thousand, three hundred".