12423130534 has 4 divisors (see below), whose sum is σ = 18634695804. Its totient is φ = 6211565266.

The previous prime is 12423130441. The next prime is 12423130537. The reversal of 12423130534 is 43503132421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423130537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3105782632 + ... + 3105782635.

It is an arithmetic number, because the mean of its divisors is an integer number (4658673951).

Almost surely, 2^12423130534 is an apocalyptic number.

12423130534 is a deficient number, since it is larger than the sum of its proper divisors (6211565270).

12423130534 is an equidigital number, since it uses as much as digits as its factorization.

12423130534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6211565269.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 12423130534 its reverse (43503132421), we get a palindrome (55926262955).

The spelling of 12423130534 in words is "twelve billion, four hundred twenty-three million, one hundred thirty thousand, five hundred thirty-four".