402242444 has 6 divisors (see below), whose sum is σ = 703924284. Its totient is φ = 201121220.

The previous prime is 402242437. The next prime is 402242447. The reversal of 402242444 is 444242204.

It is not an unprimeable number, because it can be changed into a prime (402242447) 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, 50280302 + ... + 50280309.

It is an arithmetic number, because the mean of its divisors is an integer number (117320714).

Almost surely, 2^402242444 is an apocalyptic number.

It is an amenable number.

402242444 is a deficient number, since it is larger than the sum of its proper divisors (301681840).

402242444 is a wasteful number, since it uses less digits than its factorization.

402242444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100560615 (or 100560613 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 402242444 is about 20055.9827482973. The cubic root of 402242444 is about 738.1806071341.

Adding to 402242444 its reverse (444242204), we get a palindrome (846484648).

The spelling of 402242444 in words is "four hundred two million, two hundred forty-two thousand, four hundred forty-four".