12540454 has 4 divisors (see below), whose sum is σ = 18810684. Its totient is φ = 6270226.

The previous prime is 12540449. The next prime is 12540467. The reversal of 12540454 is 45404521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12540454² = 314525973052232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3135112 + ... + 3135115.

It is an arithmetic number, because the mean of its divisors is an integer number (4702671).

Almost surely, 2^12540454 is an apocalyptic number.

12540454 is a deficient number, since it is larger than the sum of its proper divisors (6270230).

12540454 is an equidigital number, since it uses as much as digits as its factorization.

12540454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270229.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 12540454 is about 3541.2503441581. The cubic root of 12540454 is about 232.3295331952.

Adding to 12540454 its reverse (45404521), we get a palindrome (57944975).

The spelling of 12540454 in words is "twelve million, five hundred forty thousand, four hundred fifty-four".