12140145542 has 8 divisors (see below), whose sum is σ = 20811678096. Its totient is φ = 5202919512.

The previous prime is 12140145539. The next prime is 12140145571. The reversal of 12140145542 is 24554104121.

It is a happy number.

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

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, 433576613 + ... + 433576640.

It is an arithmetic number, because the mean of its divisors is an integer number (2601459762).

Almost surely, 2^12140145542 is an apocalyptic number.

12140145542 is a deficient number, since it is larger than the sum of its proper divisors (8671532554).

12140145542 is an equidigital number, since it uses as much as digits as its factorization.

12140145542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867153262.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 12140145542 its reverse (24554104121), we get a palindrome (36694249663).

The spelling of 12140145542 in words is "twelve billion, one hundred forty million, one hundred forty-five thousand, five hundred forty-two".