12421242440450 has 48 divisors (see below), whose sum is σ = 24131625852096. Its totient is φ = 4747820193600.

The previous prime is 12421242440437. The next prime is 12421242440533. The reversal of 12421242440450 is 5404424212421.

It is a self number, because there is not a number n which added to its sum of digits gives 12421242440450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4115312 + ... + 6463611.

It is an arithmetic number, because the mean of its divisors is an integer number (502742205252).

Almost surely, 2^{12421242440450} is an apocalyptic number.

12421242440450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12421242440450 is a deficient number, since it is larger than the sum of its proper divisors (11710383411646).

12421242440450 is a wasteful number, since it uses less digits than its factorization.

12421242440450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10579979 (or 10579974 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 35.

Adding to 12421242440450 its reverse (5404424212421), we get a palindrome (17825666652871).

The spelling of 12421242440450 in words is "twelve trillion, four hundred twenty-one billion, two hundred forty-two million, four hundred forty thousand, four hundred fifty".