1242513278020 has 24 divisors (see below), whose sum is σ = 2982031867584. Its totient is φ = 426004552416.

The previous prime is 1242513278009. The next prime is 1242513278057. The reversal of 1242513278020 is 208723152421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4437547282 + ... + 4437547561.

It is an arithmetic number, because the mean of its divisors is an integer number (124251327816).

Almost surely, 2^{1242513278020} is an apocalyptic number.

1242513278020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242513278020 is an abundant number, since it is smaller than the sum of its proper divisors (1739518589564).

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

1242513278020 is a wasteful number, since it uses less digits than its factorization.

1242513278020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8875094859 (or 8875094857 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 1242513278020 in words is "one trillion, two hundred forty-two billion, five hundred thirteen million, two hundred seventy-eight thousand, twenty".