400106043 has 6 divisors (see below), whose sum is σ = 577930964. Its totient is φ = 266737356.

The previous prime is 400106029. The next prime is 400106053. The reversal of 400106043 is 340601004.

It is not a de Polignac number, because 400106043 - 2¹⁶ = 400040507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400106023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22228105 + ... + 22228122.

Almost surely, 2^400106043 is an apocalyptic number.

400106043 is a deficient number, since it is larger than the sum of its proper divisors (177824921).

400106043 is a wasteful number, since it uses less digits than its factorization.

400106043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44456233 (or 44456230 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 400106043 is about 20002.6508993183. The cubic root of 400106043 is about 736.8714049338.

Adding to 400106043 its reverse (340601004), we get a palindrome (740707047).

The spelling of 400106043 in words is "four hundred million, one hundred six thousand, forty-three".