42111255031 has 2 divisors, whose sum is σ = 42111255032. Its totient is φ = 42111255030.

The previous prime is 42111255029. The next prime is 42111255037. The reversal of 42111255031 is 13055211124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42111255031 - 2¹ = 42111255029 is a prime.

It is a super-2 number, since 2×42111255031² (a number of 22 digits) contains 22 as substring.

Together with 42111255029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 42111254987 and 42111255005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42111255037) 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, 21055627515 + 21055627516.

It is an arithmetic number, because the mean of its divisors is an integer number (21055627516).

Almost surely, 2^42111255031 is an apocalyptic number.

42111255031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42111255031 is an equidigital number, since it uses as much as digits as its factorization.

42111255031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 42111255031 its reverse (13055211124), we get a palindrome (55166466155).

The spelling of 42111255031 in words is "forty-two billion, one hundred eleven million, two hundred fifty-five thousand, thirty-one".