42532439 has 2 divisors, whose sum is σ = 42532440. Its totient is φ = 42532438.

The previous prime is 42532429. The next prime is 42532493. The reversal of 42532439 is 93423524.

Together with next prime (42532493) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42532439 - 2¹⁶ = 42466903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42532429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21266219 + 21266220.

It is an arithmetic number, because the mean of its divisors is an integer number (21266220).

Almost surely, 2^42532439 is an apocalyptic number.

42532439 is a deficient number, since it is larger than the sum of its proper divisors (1).

42532439 is an equidigital number, since it uses as much as digits as its factorization.

42532439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 42532439 is about 6521.6898883648. The cubic root of 42532439 is about 349.0653676241.

The spelling of 42532439 in words is "forty-two million, five hundred thirty-two thousand, four hundred thirty-nine".