42195640076531 has 2 divisors, whose sum is σ = 42195640076532. Its totient is φ = 42195640076530.

The previous prime is 42195640076489. The next prime is 42195640076533. The reversal of 42195640076531 is 13567004659124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42195640076531 - 2⁶ = 42195640076467 is a prime.

It is a super-2 number, since 2×42195640076531² (a number of 28 digits) contains 22 as substring.

Together with 42195640076533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42195640076533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21097820038265 + 21097820038266.

It is an arithmetic number, because the mean of its divisors is an integer number (21097820038266).

Almost surely, 2^{42195640076531} is an apocalyptic number.

42195640076531 is a deficient number, since it is larger than the sum of its proper divisors (1).

42195640076531 is an equidigital number, since it uses as much as digits as its factorization.

42195640076531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 42195640076531 in words is "forty-two trillion, one hundred ninety-five billion, six hundred forty million, seventy-six thousand, five hundred thirty-one".