12011007542 has 4 divisors (see below), whose sum is σ = 18016511316. Its totient is φ = 6005503770.

The previous prime is 12011007493. The next prime is 12011007557. The reversal of 12011007542 is 24570011021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3002751884 + ... + 3002751887.

It is an arithmetic number, because the mean of its divisors is an integer number (4504127829).

Almost surely, 2^12011007542 is an apocalyptic number.

12011007542 is a deficient number, since it is larger than the sum of its proper divisors (6005503774).

12011007542 is an equidigital number, since it uses as much as digits as its factorization.

12011007542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005503773.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 12011007542 its reverse (24570011021), we get a palindrome (36581018563).

The spelling of 12011007542 in words is "twelve billion, eleven million, seven thousand, five hundred forty-two".