13123001542 has 24 divisors (see below), whose sum is σ = 22906028664. Its totient is φ = 5622244992.

The previous prime is 13123001527. The next prime is 13123001543. The reversal of 13123001542 is 24510032131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123001543) 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, 291318 + ... + 333334.

It is an arithmetic number, because the mean of its divisors is an integer number (954417861).

Almost surely, 2^13123001542 is an apocalyptic number.

13123001542 is a deficient number, since it is larger than the sum of its proper divisors (9783027122).

13123001542 is a wasteful number, since it uses less digits than its factorization.

13123001542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45220 (or 45213 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 13123001542 its reverse (24510032131), we get a palindrome (37633033673).

The spelling of 13123001542 in words is "thirteen billion, one hundred twenty-three million, one thousand, five hundred forty-two".