1242140000 has 120 divisors (see below), whose sum is σ = 3082075920. Its totient is φ = 492608000.

The previous prime is 1242139993. The next prime is 1242140051. The reversal of 1242140000 is 412421.

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 19 ways as a sum of consecutive naturals, for example, 3459821 + ... + 3460179.

It is an arithmetic number, because the mean of its divisors is an integer number (25683966).

Almost surely, 2^1242140000 is an apocalyptic number.

1242140000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541037960).

1242140000 is an abundant number, since it is smaller than the sum of its proper divisors (1839935920).

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

1242140000 is an equidigital number, since it uses as much as digits as its factorization.

1242140000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1242140000 is about 35244.0065826801. The cubic root of 1242140000 is about 1074.9547484107.

Adding to 1242140000 its reverse (412421), we get a palindrome (1242552421).

The spelling of 1242140000 in words is "one billion, two hundred forty-two million, one hundred forty thousand".