1242620220000 has 240 divisors, whose sum is σ = 4079305791792. Its totient is φ = 331100160000.

The previous prime is 1242620219959. The next prime is 1242620220029. The reversal of 1242620220000 is 220262421.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×1242620220000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 81652392 + ... + 81667608.

Almost surely, 2^{1242620220000} is an apocalyptic number.

1242620220000 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 1242620220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039652895896).

1242620220000 is an abundant number, since it is smaller than the sum of its proper divisors (2836685571792).

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

1242620220000 is a wasteful number, since it uses less digits than its factorization.

1242620220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16611 (or 16588 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1242620220000 its reverse (220262421), we get a palindrome (1242840482421).

The spelling of 1242620220000 in words is "one trillion, two hundred forty-two billion, six hundred twenty million, two hundred twenty thousand".