42765267831 has 32 divisors (see below), whose sum is σ = 67036854528. Its totient is φ = 23907517440.

The previous prime is 42765267829. The next prime is 42765267889. The reversal of 42765267831 is 13876256724.

It is a happy number.

It is not a de Polignac number, because 42765267831 - 2¹ = 42765267829 is a prime.

It is a super-2 number, since 2×42765267831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42765267821) 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 in 31 ways as a sum of consecutive naturals, for example, 577255 + ... + 647111.

It is an arithmetic number, because the mean of its divisors is an integer number (2094901704).

Almost surely, 2^42765267831 is an apocalyptic number.

42765267831 is a deficient number, since it is larger than the sum of its proper divisors (24271586697).

42765267831 is a wasteful number, since it uses less digits than its factorization.

42765267831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71311.

The product of its digits is 3386880, while the sum is 51.

The spelling of 42765267831 in words is "forty-two billion, seven hundred sixty-five million, two hundred sixty-seven thousand, eight hundred thirty-one".