43142423 has 2 divisors, whose sum is σ = 43142424. Its totient is φ = 43142422.

The previous prime is 43142417. The next prime is 43142467. The reversal of 43142423 is 32424134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43142423 - 2⁸ = 43142167 is a prime.

It is a super-2 number, since 2×43142423² = 3722537324621858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43142123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571211 + 21571212.

It is an arithmetic number, because the mean of its divisors is an integer number (21571212).

Almost surely, 2^43142423 is an apocalyptic number.

43142423 is a deficient number, since it is larger than the sum of its proper divisors (1).

43142423 is an equidigital number, since it uses as much as digits as its factorization.

43142423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 23.

The square root of 43142423 is about 6568.2891988706. The cubic root of 43142423 is about 350.7261739376.

Adding to 43142423 its reverse (32424134), we get a palindrome (75566557).

The spelling of 43142423 in words is "forty-three million, one hundred forty-two thousand, four hundred twenty-three".