1242540130 has 32 divisors (see below), whose sum is σ = 2415067200. Its totient is φ = 457555392.

The previous prime is 1242540097. The next prime is 1242540139. The reversal of 1242540130 is 310452421.

It is not an unprimeable number, because it can be changed into a prime (1242540139) by changing a digit.

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, 36661 + ... + 61879.

It is an arithmetic number, because the mean of its divisors is an integer number (75470850).

Almost surely, 2^1242540130 is an apocalyptic number.

1242540130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242540130 is a deficient number, since it is larger than the sum of its proper divisors (1172527070).

1242540130 is a wasteful number, since it uses less digits than its factorization.

1242540130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25618.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1242540130 is about 35249.6826936073. The cubic root of 1242540130 is about 1075.0701609156.

Adding to 1242540130 its reverse (310452421), we get a palindrome (1552992551).

The spelling of 1242540130 in words is "one billion, two hundred forty-two million, five hundred forty thousand, one hundred thirty".