1143101540 has 24 divisors (see below), whose sum is σ = 2743444032. Its totient is φ = 391920480.

The previous prime is 1143101527. The next prime is 1143101543. The reversal of 1143101540 is 451013411.

It is a happy number.

It is a super-2 number, since 2×1143101540² = 2613362261500743200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1143101543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4082366 + ... + 4082645.

It is an arithmetic number, because the mean of its divisors is an integer number (114310168).

Almost surely, 2^1143101540 is an apocalyptic number.

1143101540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143101540 is an abundant number, since it is smaller than the sum of its proper divisors (1600342492).

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

1143101540 is a wasteful number, since it uses less digits than its factorization.

1143101540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8165027 (or 8165025 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1143101540 is about 33809.7846784034. The cubic root of 1143101540 is about 1045.5904388259.

Adding to 1143101540 its reverse (451013411), we get a palindrome (1594114951).

The spelling of 1143101540 in words is "one billion, one hundred forty-three million, one hundred one thousand, five hundred forty".