42731510122641 has 4 divisors (see below), whose sum is σ = 56975346830192. Its totient is φ = 28487673415092.

The previous prime is 42731510122601. The next prime is 42731510122681. The reversal of 42731510122641 is 14622101513724.

It is a happy number.

42731510122641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (42731510122601) and next prime (42731510122681).

It is not a de Polignac number, because 42731510122641 - 2⁶ = 42731510122577 is a prime.

It is a super-2 number, since 2×42731510122641² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42731510122641.

It is not an unprimeable number, because it can be changed into a prime (42731510122601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7121918353771 + ... + 7121918353776.

It is an arithmetic number, because the mean of its divisors is an integer number (14243836707548).

Almost surely, 2^{42731510122641} is an apocalyptic number.

It is an amenable number.

42731510122641 is a deficient number, since it is larger than the sum of its proper divisors (14243836707551).

42731510122641 is a wasteful number, since it uses less digits than its factorization.

42731510122641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14243836707550.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 42731510122641 in words is "forty-two trillion, seven hundred thirty-one billion, five hundred ten million, one hundred twenty-two thousand, six hundred forty-one".