1242043250 has 32 divisors (see below), whose sum is σ = 2657266560. Its totient is φ = 425842800.

The previous prime is 1242043247. The next prime is 1242043321. The reversal of 1242043250 is 523402421.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 353120 + ... + 356619.

It is an arithmetic number, because the mean of its divisors is an integer number (83039580).

Almost surely, 2^1242043250 is an apocalyptic number.

1242043250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242043250 is an abundant number, since it is smaller than the sum of its proper divisors (1415223310).

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

1242043250 is an equidigital number, since it uses as much as digits as its factorization.

1242043250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709763 (or 709753 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1242043250 is about 35242.6339821529. The cubic root of 1242043250 is about 1074.9268383597.

Adding to 1242043250 its reverse (523402421), we get a palindrome (1765445671).

The spelling of 1242043250 in words is "one billion, two hundred forty-two million, forty-three thousand, two hundred fifty".