42526439 has 2 divisors, whose sum is σ = 42526440. Its totient is φ = 42526438.

The previous prime is 42526423. The next prime is 42526447. The reversal of 42526439 is 93462524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42526439 - 2⁴ = 42526423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42526399 and 42526408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42526409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21263219 + 21263220.

It is an arithmetic number, because the mean of its divisors is an integer number (21263220).

Almost surely, 2^42526439 is an apocalyptic number.

42526439 is a deficient number, since it is larger than the sum of its proper divisors (1).

42526439 is an equidigital number, since it uses as much as digits as its factorization.

42526439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 42526439 is about 6521.2298686674. The cubic root of 42526439 is about 349.0489527751.

The spelling of 42526439 in words is "forty-two million, five hundred twenty-six thousand, four hundred thirty-nine".