12190743 has 10 divisors (see below), whose sum is σ = 18210984. Its totient is φ = 8127108.

The previous prime is 12190709. The next prime is 12190747. The reversal of 12190743 is 34709121.

It is not a de Polignac number, because 12190743 - 2⁹ = 12190231 is a prime.

It is a super-2 number, since 2×12190743² = 297228429784098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12190747) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75171 + ... + 75332.

Almost surely, 2^12190743 is an apocalyptic number.

12190743 is a deficient number, since it is larger than the sum of its proper divisors (6020241).

12190743 is an equidigital number, since it uses as much as digits as its factorization.

12190743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150515 (or 150506 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12190743 is about 3491.5244521555. The cubic root of 12190743 is about 230.1495121140.

Adding to 12190743 its reverse (34709121), we get a palindrome (46899864).

The spelling of 12190743 in words is "twelve million, one hundred ninety thousand, seven hundred forty-three".