1145042155100 has 144 divisors (see below), whose sum is σ = 2541503062560. Its totient is φ = 447698534400.

The previous prime is 1145042155097. The next prime is 1145042155109. The reversal of 1145042155100 is 15512405411.

It is a super-2 number, since 2×1145042155100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145042155109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 366881540 + ... + 366884660.

Almost surely, 2^{1145042155100} is an apocalyptic number.

1145042155100 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 1145042155100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270751531280).

1145042155100 is an abundant number, since it is smaller than the sum of its proper divisors (1396460907460).

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

1145042155100 is a wasteful number, since it uses less digits than its factorization.

1145042155100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 1145042155100 in words is "one trillion, one hundred forty-five billion, forty-two million, one hundred fifty-five thousand, one hundred".