12542558 has 16 divisors (see below), whose sum is σ = 22243680. Its totient is φ = 5189856.

The previous prime is 12542557. The next prime is 12542591. The reversal of 12542558 is 85524521.

It is a super-2 number, since 2×12542558² = 314631522366728, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15041 + ... + 15852.

It is an arithmetic number, because the mean of its divisors is an integer number (1390230).

Almost surely, 2^12542558 is an apocalyptic number.

12542558 is a deficient number, since it is larger than the sum of its proper divisors (9701122).

12542558 is a wasteful number, since it uses less digits than its factorization.

12542558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30931.

The product of its digits is 16000, while the sum is 32.

The square root of 12542558 is about 3541.5474019135. The cubic root of 12542558 is about 232.3425256542.

The spelling of 12542558 in words is "twelve million, five hundred forty-two thousand, five hundred fifty-eight".