1242455050020 has 24 divisors (see below), whose sum is σ = 3478874140224. Its totient is φ = 331321346656.

The previous prime is 1242455050013. The next prime is 1242455050021. The reversal of 1242455050020 is 200505542421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 1242455050020.

It is not an unprimeable number, because it can be changed into a prime (1242455050021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10353792024 + ... + 10353792143.

It is an arithmetic number, because the mean of its divisors is an integer number (144953089176).

Almost surely, 2^{1242455050020} is an apocalyptic number.

1242455050020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242455050020 is an abundant number, since it is smaller than the sum of its proper divisors (2236419090204).

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

1242455050020 is a wasteful number, since it uses less digits than its factorization.

1242455050020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20707584179 (or 20707584177 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 1242455050020 in words is "one trillion, two hundred forty-two billion, four hundred fifty-five million, fifty thousand, twenty".