12554310242 has 4 divisors (see below), whose sum is σ = 18831465366. Its totient is φ = 6277155120.

The previous prime is 12554310217. The next prime is 12554310247. The reversal of 12554310242 is 24201345521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24201345521 = 503 ⋅48114007.

It can be written as a sum of positive squares in only one way, i.e., 11119491601 + 1434818641 = 105449^2 + 37879^2 .

It is a super-2 number, since 2×12554310242² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12554310247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3138577559 + ... + 3138577562.

Almost surely, 2^12554310242 is an apocalyptic number.

12554310242 is a deficient number, since it is larger than the sum of its proper divisors (6277155124).

12554310242 is an equidigital number, since it uses as much as digits as its factorization.

12554310242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277155123.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 12554310242 its reverse (24201345521), we get a palindrome (36755655763).

The spelling of 12554310242 in words is "twelve billion, five hundred fifty-four million, three hundred ten thousand, two hundred forty-two".