130402543 has 4 divisors (see below), whose sum is σ = 131266288. Its totient is φ = 129538800.

The previous prime is 130402537. The next prime is 130402549. The reversal of 130402543 is 345204031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345204031 = 1213 ⋅284587.

It is an interprime number because it is at equal distance from previous prime (130402537) and next prime (130402549).

It is a cyclic number.

It is not a de Polignac number, because 130402543 - 2⁹ = 130402031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130402549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431646 + ... + 431947.

It is an arithmetic number, because the mean of its divisors is an integer number (32816572).

Almost surely, 2^130402543 is an apocalyptic number.

130402543 is a deficient number, since it is larger than the sum of its proper divisors (863745).

130402543 is an equidigital number, since it uses as much as digits as its factorization.

130402543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863744.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 130402543 is about 11419.3932851093. The cubic root of 130402543 is about 507.1020352326.

Adding to 130402543 its reverse (345204031), we get a palindrome (475606574).

The spelling of 130402543 in words is "one hundred thirty million, four hundred two thousand, five hundred forty-three".