12042421352 has 32 divisors (see below), whose sum is σ = 24403022280. Its totient is φ = 5538247680.

The previous prime is 12042421343. The next prime is 12042421381. The reversal of 12042421352 is 25312424021.

It can be written as a sum of positive squares in 4 ways, for example, as 10892261956 + 1150159396 = 104366^2 + 33914^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176813 + ... + 235260.

Almost surely, 2^12042421352 is an apocalyptic number.

It is an amenable number.

12042421352 is an abundant number, since it is smaller than the sum of its proper divisors (12360600928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12042421352 is a wasteful number, since it uses less digits than its factorization.

12042421352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412373 (or 412369 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 12042421352 its reverse (25312424021), we get a palindrome (37354845373).

The spelling of 12042421352 in words is "twelve billion, forty-two million, four hundred twenty-one thousand, three hundred fifty-two".