842540527 has 2 divisors, whose sum is σ = 842540528. Its totient is φ = 842540526.

The previous prime is 842540507. The next prime is 842540539. The reversal of 842540527 is 725045248.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842540527 - 2⁷ = 842540399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842540507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421270263 + 421270264.

It is an arithmetic number, because the mean of its divisors is an integer number (421270264).

Almost surely, 2^842540527 is an apocalyptic number.

842540527 is a deficient number, since it is larger than the sum of its proper divisors (1).

842540527 is an equidigital number, since it uses as much as digits as its factorization.

842540527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 842540527 is about 29026.5486580820. The cubic root of 842540527 is about 944.4890632172.

The spelling of 842540527 in words is "eight hundred forty-two million, five hundred forty thousand, five hundred twenty-seven".