12540154 has 16 divisors (see below), whose sum is σ = 20575296. Its totient is φ = 5684800.

The previous prime is 12540149. The next prime is 12540167. The reversal of 12540154 is 45104521.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13794 + ... + 14674.

It is an arithmetic number, because the mean of its divisors is an integer number (1285956).

Almost surely, 2^12540154 is an apocalyptic number.

12540154 is a deficient number, since it is larger than the sum of its proper divisors (8035142).

12540154 is a wasteful number, since it uses less digits than its factorization.

12540154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 12540154 is about 3541.2079859844. The cubic root of 12540154 is about 232.3276805399.

Adding to 12540154 its reverse (45104521), we get a palindrome (57644675).

The spelling of 12540154 in words is "twelve million, five hundred forty thousand, one hundred fifty-four".