438025642 has 8 divisors (see below), whose sum is σ = 657224100. Its totient is φ = 218950944.

The previous prime is 438025633. The next prime is 438025681. The reversal of 438025642 is 246520834.

It can be written as a sum of positive squares in 2 ways, for example, as 438023041 + 2601 = 20929^2 + 51^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 438025598 and 438025607.

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 in 3 ways as a sum of consecutive naturals, for example, 21517 + ... + 36592.

Almost surely, 2^438025642 is an apocalyptic number.

438025642 is a deficient number, since it is larger than the sum of its proper divisors (219198458).

438025642 is a wasteful number, since it uses less digits than its factorization.

438025642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61880.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 438025642 is about 20929.0621385670. The cubic root of 438025642 is about 759.4511515180.

The spelling of 438025642 in words is "four hundred thirty-eight million, twenty-five thousand, six hundred forty-two".