12104620442 has 4 divisors (see below), whose sum is σ = 18156930666. Its totient is φ = 6052310220.

The previous prime is 12104620433. The next prime is 12104620469. The reversal of 12104620442 is 24402640121.

It is a Cunningham number, because it is equal to 110021²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24402640121 = 29 ⋅841470349.

It can be written as a sum of positive squares in only one way, i.e., 12104620441 + 1 = 110021^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3026155109 + ... + 3026155112.

Almost surely, 2^12104620442 is an apocalyptic number.

12104620442 is a deficient number, since it is larger than the sum of its proper divisors (6052310224).

12104620442 is an equidigital number, since it uses as much as digits as its factorization.

12104620442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052310223.

The product of its (nonzero) digits is 3072, while the sum is 26.

The spelling of 12104620442 in words is "twelve billion, one hundred four million, six hundred twenty thousand, four hundred forty-two".