12542031 has 6 divisors (see below), whose sum is σ = 18116280. Its totient is φ = 8361348.

The previous prime is 12542029. The next prime is 12542059. The reversal of 12542031 is 13024521.

It is not a de Polignac number, because 12542031 - 2¹ = 12542029 is a prime.

It is a super-2 number, since 2×12542031² = 314605083209922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12541995 and 12542013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 696771 + ... + 696788.

It is an arithmetic number, because the mean of its divisors is an integer number (3019380).

Almost surely, 2^12542031 is an apocalyptic number.

12542031 is a deficient number, since it is larger than the sum of its proper divisors (5574249).

12542031 is a wasteful number, since it uses less digits than its factorization.

12542031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393565 (or 1393562 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12542031 is about 3541.4729986264. The cubic root of 12542031 is about 232.3392715007.

Adding to 12542031 its reverse (13024521), we get a palindrome (25566552).

The spelling of 12542031 in words is "twelve million, five hundred forty-two thousand, thirty-one".