42043757 has 4 divisors (see below), whose sum is σ = 48050016. Its totient is φ = 36037500.

The previous prime is 42043741. The next prime is 42043763. The reversal of 42043757 is 75734024.

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 42043757 - 2⁴ = 42043741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42043357) 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, 3003119 + ... + 3003132.

It is an arithmetic number, because the mean of its divisors is an integer number (12012504).

Almost surely, 2^42043757 is an apocalyptic number.

It is an amenable number.

42043757 is a deficient number, since it is larger than the sum of its proper divisors (6006259).

42043757 is an equidigital number, since it uses as much as digits as its factorization.

42043757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006258.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 42043757 is about 6484.1157454197. The cubic root of 42043757 is about 347.7233372722.

It can be divided in two parts, 4204375 and 7, that multiplied together give a square (29430625 = 5425²).

The spelling of 42043757 in words is "forty-two million, forty-three thousand, seven hundred fifty-seven".