12142493 has 4 divisors (see below), whose sum is σ = 13246368. Its totient is φ = 11038620.

The previous prime is 12142451. The next prime is 12142499. The reversal of 12142493 is 39424121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39424121 = 11 ⋅3584011.

It is a cyclic number.

It is not a de Polignac number, because 12142493 - 2⁸ = 12142237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551921 + ... + 551942.

It is an arithmetic number, because the mean of its divisors is an integer number (3311592).

Almost surely, 2^12142493 is an apocalyptic number.

It is an amenable number.

12142493 is a deficient number, since it is larger than the sum of its proper divisors (1103875).

12142493 is a wasteful number, since it uses less digits than its factorization.

12142493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103874.

The product of its digits is 1728, while the sum is 26.

The square root of 12142493 is about 3484.6080123882. The cubic root of 12142493 is about 229.8454727625.

The spelling of 12142493 in words is "twelve million, one hundred forty-two thousand, four hundred ninety-three".