12124401542 has 16 divisors (see below), whose sum is σ = 19858632192. Its totient is φ = 5505896520.

The previous prime is 12124401517. The next prime is 12124401613. The reversal of 12124401542 is 24510442121.

It is a super-2 number, since 2×12124401542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235838 + ... + 282609.

It is an arithmetic number, because the mean of its divisors is an integer number (1241164512).

Almost surely, 2^12124401542 is an apocalyptic number.

12124401542 is a deficient number, since it is larger than the sum of its proper divisors (7734230650).

12124401542 is a wasteful number, since it uses less digits than its factorization.

12124401542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519523.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 12124401542 its reverse (24510442121), we get a palindrome (36634843663).

The spelling of 12124401542 in words is "twelve billion, one hundred twenty-four million, four hundred one thousand, five hundred forty-two".