10406042639 has 2 divisors, whose sum is σ = 10406042640. Its totient is φ = 10406042638.

The previous prime is 10406042501. The next prime is 10406042641. The reversal of 10406042639 is 93624060401.

It is a strong prime.

It is an emirp because it is prime and its reverse (93624060401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10406042639 - 2¹⁶ = 10405977103 is a prime.

Together with 10406042641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10406042599 and 10406042608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10406042039) 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, 5203021319 + 5203021320.

It is an arithmetic number, because the mean of its divisors is an integer number (5203021320).

Almost surely, 2^10406042639 is an apocalyptic number.

10406042639 is a deficient number, since it is larger than the sum of its proper divisors (1).

10406042639 is an equidigital number, since it uses as much as digits as its factorization.

10406042639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 10406042639 in words is "ten billion, four hundred six million, forty-two thousand, six hundred thirty-nine".