43142249 has 4 divisors (see below), whose sum is σ = 43335936. Its totient is φ = 42948564.

The previous prime is 43142213. The next prime is 43142303. The reversal of 43142249 is 94224134.

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.

It is a cyclic number.

It is not a de Polignac number, because 43142249 - 2⁸ = 43141993 is a prime.

It is a super-2 number, since 2×43142249² = 3722507297556002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43141249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96509 + ... + 96954.

It is an arithmetic number, because the mean of its divisors is an integer number (10833984).

Almost surely, 2^43142249 is an apocalyptic number.

It is an amenable number.

43142249 is a deficient number, since it is larger than the sum of its proper divisors (193687).

43142249 is a wasteful number, since it uses less digits than its factorization.

43142249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193686.

The product of its digits is 6912, while the sum is 29.

The square root of 43142249 is about 6568.2759533990. The cubic root of 43142249 is about 350.7257024261.

The spelling of 43142249 in words is "forty-three million, one hundred forty-two thousand, two hundred forty-nine".