10400043423 has 64 divisors (see below), whose sum is σ = 18662400000. Its totient is φ = 4989452160.

The previous prime is 10400043397. The next prime is 10400043461. The reversal of 10400043423 is 32434000401.

It is not a de Polignac number, because 10400043423 - 2²⁹ = 9863172511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 10400043423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400043323) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120328 + ... + 187826.

It is an arithmetic number, because the mean of its divisors is an integer number (291600000).

Almost surely, 2^10400043423 is an apocalyptic number.

10400043423 is a deficient number, since it is larger than the sum of its proper divisors (8262356577).

10400043423 is a wasteful number, since it uses less digits than its factorization.

10400043423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67572.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 10400043423 its reverse (32434000401), we get a palindrome (42834043824).

The spelling of 10400043423 in words is "ten billion, four hundred million, forty-three thousand, four hundred twenty-three".