1242420589680 has 40 divisors (see below), whose sum is σ = 3851503828752. Its totient is φ = 331312157184.

The previous prime is 1242420589643. The next prime is 1242420589681. The reversal of 1242420589680 is 869850242421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242420589681) 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, 2588375989 + ... + 2588376468.

Almost surely, 2^{1242420589680} is an apocalyptic number.

1242420589680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242420589680 is an abundant number, since it is smaller than the sum of its proper divisors (2609083239072).

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

1242420589680 is a wasteful number, since it uses less digits than its factorization.

1242420589680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176752473 (or 5176752467 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 1242420589680 in words is "one trillion, two hundred forty-two billion, four hundred twenty million, five hundred eighty-nine thousand, six hundred eighty".