501042131 has 2 divisors, whose sum is σ = 501042132. Its totient is φ = 501042130.

The previous prime is 501042127. The next prime is 501042167. The reversal of 501042131 is 131240105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501042131 - 2² = 501042127 is a prime.

It is a super-2 number, since 2×501042131² = 502086434074042322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (501042631) 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, 250521065 + 250521066.

It is an arithmetic number, because the mean of its divisors is an integer number (250521066).

Almost surely, 2^501042131 is an apocalyptic number.

501042131 is a deficient number, since it is larger than the sum of its proper divisors (1).

501042131 is an equidigital number, since it uses as much as digits as its factorization.

501042131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 501042131 is about 22383.9704029468. The cubic root of 501042131 is about 794.2515699365.

Adding to 501042131 its reverse (131240105), we get a palindrome (632282236).

The spelling of 501042131 in words is "five hundred one million, forty-two thousand, one hundred thirty-one".