43142347 has 2 divisors, whose sum is σ = 43142348. Its totient is φ = 43142346.

The previous prime is 43142317. The next prime is 43142353. The reversal of 43142347 is 74324134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43142347 - 2¹⁵ = 43109579 is a prime.

It is a super-2 number, since 2×43142347² = 3722524209336818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43142317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571173 + 21571174.

It is an arithmetic number, because the mean of its divisors is an integer number (21571174).

Almost surely, 2^43142347 is an apocalyptic number.

43142347 is a deficient number, since it is larger than the sum of its proper divisors (1).

43142347 is an equidigital number, since it uses as much as digits as its factorization.

43142347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 28.

The square root of 43142347 is about 6568.2834134955. The cubic root of 43142347 is about 350.7259679902.

It can be divided in two parts, 431 and 42347, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 43142347 in words is "forty-three million, one hundred forty-two thousand, three hundred forty-seven".