42131527 has 2 divisors, whose sum is σ = 42131528. Its totient is φ = 42131526.

The previous prime is 42131521. The next prime is 42131549. The reversal of 42131527 is 72513124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42131527 - 2⁷ = 42131399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42131521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065763 + 21065764.

It is an arithmetic number, because the mean of its divisors is an integer number (21065764).

Almost surely, 2^42131527 is an apocalyptic number.

42131527 is a deficient number, since it is larger than the sum of its proper divisors (1).

42131527 is an equidigital number, since it uses as much as digits as its factorization.

42131527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 42131527 is about 6490.8802946904. The cubic root of 42131527 is about 347.9651366625.

The spelling of 42131527 in words is "forty-two million, one hundred thirty-one thousand, five hundred twenty-seven".