1061155143 has 12 divisors (see below), whose sum is σ = 1565392608. Its totient is φ = 692384640.

The previous prime is 1061155127. The next prime is 1061155159. The reversal of 1061155143 is 3415511601.

1061155143 is a `hidden beast` number, since 1 + 0 + 611 + 5 + 5 + 1 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (1061155127) and next prime (1061155159).

It is not a de Polignac number, because 1061155143 - 2⁴ = 1061155127 is a prime.

It is a super-2 number, since 2×1061155143² = 2252100475030700898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061155103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1253898 + ... + 1254743.

It is an arithmetic number, because the mean of its divisors is an integer number (130449384).

Almost surely, 2^1061155143 is an apocalyptic number.

1061155143 is a deficient number, since it is larger than the sum of its proper divisors (504237465).

1061155143 is a wasteful number, since it uses less digits than its factorization.

1061155143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508694 (or 2508691 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1061155143 is about 32575.3763293688. The cubic root of 1061155143 is about 1019.9830648861.

Adding to 1061155143 its reverse (3415511601), we get a palindrome (4476666744).

The spelling of 1061155143 in words is "one billion, sixty-one million, one hundred fifty-five thousand, one hundred forty-three".