1255141543 has 4 divisors (see below), whose sum is σ = 1255426128. Its totient is φ = 1254856960.

The previous prime is 1255141519. The next prime is 1255141549. The reversal of 1255141543 is 3451415521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3451415521 = 38393 ⋅89897.

It is a cyclic number.

It is not a de Polignac number, because 1255141543 - 2⁹ = 1255141031 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255141549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135571 + ... + 144532.

It is an arithmetic number, because the mean of its divisors is an integer number (313856532).

Almost surely, 2^1255141543 is an apocalyptic number.

1255141543 is a deficient number, since it is larger than the sum of its proper divisors (284585).

1255141543 is an equidigital number, since it uses as much as digits as its factorization.

1255141543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284584.

The product of its digits is 12000, while the sum is 31.

The square root of 1255141543 is about 35427.9768403447. The cubic root of 1255141543 is about 1078.6922737646.

The spelling of 1255141543 in words is "one billion, two hundred fifty-five million, one hundred forty-one thousand, five hundred forty-three".