55242143000000 has 392 divisors, whose sum is σ = 152959064598912. Its totient is φ = 19620720000000.

The previous prime is 55242142999997. The next prime is 55242143000017. The reversal of 55242143000000 is 34124255.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 472941605 + ... + 473058395.

Almost surely, 2^{55242143000000} is an apocalyptic number.

55242143000000 is a gapful number since it is divisible by the number (50) 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 55242143000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76479532299456).

55242143000000 is an abundant number, since it is smaller than the sum of its proper divisors (97716921598912).

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

55242143000000 is an equidigital number, since it uses as much as digits as its factorization.

55242143000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116887 (or 116852 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 55242143000000 its reverse (34124255), we get a palindrome (55242177124255).

The spelling of 55242143000000 in words is "fifty-five trillion, two hundred forty-two billion, one hundred forty-three million", and thus it is an aban number.