43042357 has 2 divisors, whose sum is σ = 43042358. Its totient is φ = 43042356.

The previous prime is 43042339. The next prime is 43042367. The reversal of 43042357 is 75324034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35892081 + 7150276 = 5991^2 + 2674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43042357 is a prime.

It is a super-2 number, since 2×43042357² = 3705288992230898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43042327) 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 as a sum of consecutive naturals, namely, 21521178 + 21521179.

It is an arithmetic number, because the mean of its divisors is an integer number (21521179).

Almost surely, 2^43042357 is an apocalyptic number.

It is an amenable number.

43042357 is a deficient number, since it is larger than the sum of its proper divisors (1).

43042357 is an equidigital number, since it uses as much as digits as its factorization.

43042357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 43042357 is about 6560.6674203163. The cubic root of 43042357 is about 350.4548019561.

The spelling of 43042357 in words is "forty-three million, forty-two thousand, three hundred fifty-seven".