1142801021520 has 160 divisors (see below), whose sum is σ = 3966363815040. Its totient is φ = 302420551680.

The previous prime is 1142801021489. The next prime is 1142801021569. The reversal of 1142801021520 is 251201082411.

1142801021520 is a `hidden beast` number, since 1 + 1 + 42 + 80 + 1 + 0 + 21 + 520 = 666.

It is a super-2 number, since 2×1142801021520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1736409 + ... + 2302328.

It is an arithmetic number, because the mean of its divisors is an integer number (24789773844).

Almost surely, 2^{1142801021520} is an apocalyptic number.

1142801021520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142801021520 is an abundant number, since it is smaller than the sum of its proper divisors (2823562793520).

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

1142801021520 is a wasteful number, since it uses less digits than its factorization.

1142801021520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038890 (or 4038878 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The spelling of 1142801021520 in words is "one trillion, one hundred forty-two billion, eight hundred one million, twenty-one thousand, five hundred twenty".