12520454 has 8 divisors (see below), whose sum is σ = 18835848. Its totient is φ = 6241840.

The previous prime is 12520451. The next prime is 12520463. The reversal of 12520454 is 45402521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12520454² = 313523536732232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8327 + ... + 9714.

It is an arithmetic number, because the mean of its divisors is an integer number (2354481).

Almost surely, 2^12520454 is an apocalyptic number.

12520454 is a deficient number, since it is larger than the sum of its proper divisors (6315394).

12520454 is a wasteful number, since it uses less digits than its factorization.

12520454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18390.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12520454 is about 3538.4253560023. The cubic root of 12520454 is about 232.2059581093.

Adding to 12520454 its reverse (45402521), we get a palindrome (57922975).

The spelling of 12520454 in words is "twelve million, five hundred twenty thousand, four hundred fifty-four".