1142155550520 has 192 divisors, whose sum is σ = 3763007539200. Its totient is φ = 300413664000.

The previous prime is 1142155550507. The next prime is 1142155550561. The reversal of 1142155550520 is 250555512411.

1142155550520 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 1 + 55 + 550 + 52 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9245721 + ... + 9368439.

It is an arithmetic number, because the mean of its divisors is an integer number (19598997600).

Almost surely, 2^{1142155550520} is an apocalyptic number.

1142155550520 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 1142155550520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1881503769600).

1142155550520 is an abundant number, since it is smaller than the sum of its proper divisors (2620851988680).

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

1142155550520 is a wasteful number, since it uses less digits than its factorization.

1142155550520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123090 (or 123083 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 1142155550520 in words is "one trillion, one hundred forty-two billion, one hundred fifty-five million, five hundred fifty thousand, five hundred twenty".