400404200442 has 16 divisors (see below), whose sum is σ = 800841608640. Its totient is φ = 133462532192.

The previous prime is 400404200411. The next prime is 400404200503. The reversal of 400404200442 is 244002404004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225518 + ... + 1517465.

It is an arithmetic number, because the mean of its divisors is an integer number (50052600540).

Almost surely, 2^400404200442 is an apocalyptic number.

400404200442 is an abundant number, since it is smaller than the sum of its proper divisors (400437408198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400404200442 is a wasteful number, since it uses less digits than its factorization.

400404200442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767317.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 400404200442 its reverse (244002404004), we get a palindrome (644406604446).

The spelling of 400404200442 in words is "four hundred billion, four hundred four million, two hundred thousand, four hundred forty-two".