402442024 has 8 divisors (see below), whose sum is σ = 754578810. Its totient is φ = 201221008.

The previous prime is 402442013. The next prime is 402442043. The reversal of 402442024 is 420244204.

It can be written as a sum of positive squares in only one way, i.e., 308002500 + 94439524 = 17550^2 + 9718^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 402441986 and 402442004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25152619 + ... + 25152634.

Almost surely, 2^402442024 is an apocalyptic number.

It is an amenable number.

402442024 is a deficient number, since it is larger than the sum of its proper divisors (352136786).

402442024 is a wasteful number, since it uses less digits than its factorization.

402442024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50305259 (or 50305255 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 402442024 is about 20060.9577039582. The cubic root of 402442024 is about 738.3026742508.

Adding to 402442024 its reverse (420244204), we get a palindrome (822686228).

The spelling of 402442024 in words is "four hundred two million, four hundred forty-two thousand, twenty-four".