12454442542 has 8 divisors (see below), whose sum is σ = 18693651600. Its totient is φ = 6223225344.

The previous prime is 12454442521. The next prime is 12454442591. The reversal of 12454442542 is 24524445421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12454442542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994067 + ... + 2000302.

It is an arithmetic number, because the mean of its divisors is an integer number (2336706450).

Almost surely, 2^12454442542 is an apocalyptic number.

12454442542 is a deficient number, since it is larger than the sum of its proper divisors (6239209058).

12454442542 is a wasteful number, since it uses less digits than its factorization.

12454442542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3995930.

The product of its digits is 204800, while the sum is 37.

Adding to 12454442542 its reverse (24524445421), we get a palindrome (36978887963).

The spelling of 12454442542 in words is "twelve billion, four hundred fifty-four million, four hundred forty-two thousand, five hundred forty-two".