1001013243140 has 24 divisors (see below), whose sum is σ = 2130924085080. Its totient is φ = 394920292608.

The previous prime is 1001013243107. The next prime is 1001013243157. The reversal of 1001013243140 is 413423101001.

It can be written as a sum of positive squares in 4 ways, for example, as 71300748484 + 929712494656 = 267022^2 + 964216^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 342811295 + ... + 342814214.

It is an arithmetic number, because the mean of its divisors is an integer number (88788503545).

Almost surely, 2^{1001013243140} is an apocalyptic number.

1001013243140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001013243140 is an abundant number, since it is smaller than the sum of its proper divisors (1129910841940).

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

1001013243140 is a wasteful number, since it uses less digits than its factorization.

1001013243140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685625591 (or 685625589 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1001013243140 its reverse (413423101001), we get a palindrome (1414436344141).

The spelling of 1001013243140 in words is "one trillion, one billion, thirteen million, two hundred forty-three thousand, one hundred forty".