42255131 has 2 divisors, whose sum is σ = 42255132. Its totient is φ = 42255130.

The previous prime is 42255113. The next prime is 42255181. The reversal of 42255131 is 13155224.

Together with previous prime (42255113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42255131 is a prime.

It is a super-2 number, since 2×42255131² = 3570992191654322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42255097 and 42255106.

It is not a weakly prime, because it can be changed into another prime (42255181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21127565 + 21127566.

It is an arithmetic number, because the mean of its divisors is an integer number (21127566).

Almost surely, 2^42255131 is an apocalyptic number.

42255131 is a deficient number, since it is larger than the sum of its proper divisors (1).

42255131 is an equidigital number, since it uses as much as digits as its factorization.

42255131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 42255131 is about 6500.3946803252. The cubic root of 42255131 is about 348.3050870823.

The spelling of 42255131 in words is "forty-two million, two hundred fifty-five thousand, one hundred thirty-one".