1242124130 has 32 divisors (see below), whose sum is σ = 2410100784. Its totient is φ = 458194176.

The previous prime is 1242124129. The next prime is 1242124157. The reversal of 1242124130 is 314212421.

It can be written as a sum of positive squares in 8 ways, for example, as 1605289 + 1240518841 = 1267^2 + 35221^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153752 + ... + 161628.

Almost surely, 2^1242124130 is an apocalyptic number.

1242124130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242124130 is a deficient number, since it is larger than the sum of its proper divisors (1167976654).

1242124130 is a wasteful number, since it uses less digits than its factorization.

1242124130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1242124130 is about 35243.7814372976. The cubic root of 1242124130 is about 1074.9501703962.

Adding to 1242124130 its reverse (314212421), we get a palindrome (1556336551).

The spelling of 1242124130 in words is "one billion, two hundred forty-two million, one hundred twenty-four thousand, one hundred thirty".