642301846031 has 2 divisors, whose sum is σ = 642301846032. Its totient is φ = 642301846030.

The previous prime is 642301846009. The next prime is 642301846079. The reversal of 642301846031 is 130648103246.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642301846031 - 2⁶ = 642301845967 is a prime.

It is a super-2 number, since 2×642301846031² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642301846831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321150923015 + 321150923016.

It is an arithmetic number, because the mean of its divisors is an integer number (321150923016).

Almost surely, 2^642301846031 is an apocalyptic number.

642301846031 is a deficient number, since it is larger than the sum of its proper divisors (1).

642301846031 is an equidigital number, since it uses as much as digits as its factorization.

642301846031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

Adding to 642301846031 its reverse (130648103246), we get a palindrome (772949949277).

The spelling of 642301846031 in words is "six hundred forty-two billion, three hundred one million, eight hundred forty-six thousand, thirty-one".