1242089652100 has 72 divisors (see below), whose sum is σ = 2947772455488. Its totient is φ = 450531100800.

The previous prime is 1242089652079. The next prime is 1242089652131. The reversal of 1242089652100 is 12569802421.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 985432 + ... + 1858831.

It is an arithmetic number, because the mean of its divisors is an integer number (40941284104).

Almost surely, 2^{1242089652100} is an apocalyptic number.

1242089652100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242089652100 is an abundant number, since it is smaller than the sum of its proper divisors (1705682803388).

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

1242089652100 is a wasteful number, since it uses less digits than its factorization.

1242089652100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844685 (or 2844678 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 1242089652100 in words is "one trillion, two hundred forty-two billion, eighty-nine million, six hundred fifty-two thousand, one hundred".