4999642 has 4 divisors (see below), whose sum is σ = 7499466. Its totient is φ = 2499820.

The previous prime is 4999639. The next prime is 4999651. The reversal of 4999642 is 2469994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3389281 + 1610361 = 1841^2 + 1269^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249909 + ... + 1249912.

Almost surely, 2^4999642 is an apocalyptic number.

4999642 is a deficient number, since it is larger than the sum of its proper divisors (2499824).

4999642 is a wasteful number, since it uses less digits than its factorization.

4999642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499823.

The product of its digits is 139968, while the sum is 43.

The square root of 4999642 is about 2235.9879248332. The cubic root of 4999642 is about 170.9935134277.

The spelling of 4999642 in words is "four million, nine hundred ninety-nine thousand, six hundred forty-two".