1254423543 has 16 divisors (see below), whose sum is σ = 1719001440. Its totient is φ = 813096576.

The previous prime is 1254423493. The next prime is 1254423551. The reversal of 1254423543 is 3453244521.

It is not a de Polignac number, because 1254423543 - 2¹⁷ = 1254292471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254423343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195421 + ... + 201737.

It is an arithmetic number, because the mean of its divisors is an integer number (107437590).

Almost surely, 2^1254423543 is an apocalyptic number.

1254423543 is a deficient number, since it is larger than the sum of its proper divisors (464577897).

1254423543 is a wasteful number, since it uses less digits than its factorization.

1254423543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146.

The product of its digits is 57600, while the sum is 33.

The square root of 1254423543 is about 35417.8421561789. The cubic root of 1254423543 is about 1078.4865469584.

The spelling of 1254423543 in words is "one billion, two hundred fifty-four million, four hundred twenty-three thousand, five hundred forty-three".