10400142391 has 2 divisors, whose sum is σ = 10400142392. Its totient is φ = 10400142390.

The previous prime is 10400142383. The next prime is 10400142419. The reversal of 10400142391 is 19324100401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10400142391 - 2³ = 10400142383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10400142091) 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, 5200071195 + 5200071196.

It is an arithmetic number, because the mean of its divisors is an integer number (5200071196).

Almost surely, 2^10400142391 is an apocalyptic number.

10400142391 is a deficient number, since it is larger than the sum of its proper divisors (1).

10400142391 is an equidigital number, since it uses as much as digits as its factorization.

10400142391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 10400142391 its reverse (19324100401), we get a palindrome (29724242792).

The spelling of 10400142391 in words is "ten billion, four hundred million, one hundred forty-two thousand, three hundred ninety-one".