12421498 has 4 divisors (see below), whose sum is σ = 18632250. Its totient is φ = 6210748.

The previous prime is 12421481. The next prime is 12421501. The reversal of 12421498 is 89412421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89412421 = 7 ⋅12773203.

It can be written as a sum of positive squares in only one way, i.e., 11068929 + 1352569 = 3327^2 + 1163^2 .

It is a super-2 number, since 2×12421498² = 308587225128008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3105373 + ... + 3105376.

Almost surely, 2^12421498 is an apocalyptic number.

12421498 is a deficient number, since it is larger than the sum of its proper divisors (6210752).

12421498 is an equidigital number, since it uses as much as digits as its factorization.

12421498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210751.

The product of its digits is 4608, while the sum is 31.

The square root of 12421498 is about 3524.4145613137. The cubic root of 12421498 is about 231.5925890742.

The spelling of 12421498 in words is "twelve million, four hundred twenty-one thousand, four hundred ninety-eight".