4538642 has 8 divisors (see below), whose sum is σ = 6992076. Its totient is φ = 2207952.

The previous prime is 4538641. The next prime is 4538657. The reversal of 4538642 is 2468354.

It can be written as a sum of positive squares in 2 ways, for example, as 3308761 + 1229881 = 1819^2 + 1109^2 .

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

It is a d-powerful number, because it can be written as 4⁷ + 5² + 3⁵ + 8⁶ + 6 + 4⁸ + 2²² .

It is a junction number, because it is equal to n+sod(n) for n = 4538599 and 4538608.

It is not an unprimeable number, because it can be changed into a prime (4538641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30593 + ... + 30740.

Almost surely, 2^4538642 is an apocalyptic number.

4538642 is a deficient number, since it is larger than the sum of its proper divisors (2453434).

4538642 is a wasteful number, since it uses less digits than its factorization.

4538642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61372.

The product of its digits is 23040, while the sum is 32.

The square root of 4538642 is about 2130.4088809428. The cubic root of 4538642 is about 165.5675831356.

The spelling of 4538642 in words is "four million, five hundred thirty-eight thousand, six hundred forty-two".