400410242243 has 16 divisors (see below), whose sum is σ = 457081374816. Its totient is φ = 347488727040.

The previous prime is 400410242209. The next prime is 400410242251. The reversal of 400410242243 is 342242014004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400410242243 - 2¹⁸ = 400409980099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400410262243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9259646 + ... + 9302787.

It is an arithmetic number, because the mean of its divisors is an integer number (28567585926).

Almost surely, 2^400410242243 is an apocalyptic number.

400410242243 is a deficient number, since it is larger than the sum of its proper divisors (56671132573).

400410242243 is a wasteful number, since it uses less digits than its factorization.

400410242243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18562534.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 400410242243 its reverse (342242014004), we get a palindrome (742652256247).

The spelling of 400410242243 in words is "four hundred billion, four hundred ten million, two hundred forty-two thousand, two hundred forty-three".