42434537 has 2 divisors, whose sum is σ = 42434538. Its totient is φ = 42434536.

The previous prime is 42434521. The next prime is 42434591. The reversal of 42434537 is 73543424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38390416 + 4044121 = 6196^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 42434537 - 2⁴ = 42434521 is a prime.

It is not a weakly prime, because it can be changed into another prime (42434137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21217268 + 21217269.

It is an arithmetic number, because the mean of its divisors is an integer number (21217269).

Almost surely, 2^42434537 is an apocalyptic number.

It is an amenable number.

42434537 is a deficient number, since it is larger than the sum of its proper divisors (1).

42434537 is an equidigital number, since it uses as much as digits as its factorization.

42434537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 32.

The square root of 42434537 is about 6514.1796874204. The cubic root of 42434537 is about 348.7973333664.

The spelling of 42434537 in words is "forty-two million, four hundred thirty-four thousand, five hundred thirty-seven".