4996542021 has 4 divisors (see below), whose sum is σ = 6662056032. Its totient is φ = 3331028012.

The previous prime is 4996542017. The next prime is 4996542041. The reversal of 4996542021 is 1202456994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4996542021 - 2² = 4996542017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4996542041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832757001 + ... + 832757006.

It is an arithmetic number, because the mean of its divisors is an integer number (1665514008).

Almost surely, 2^4996542021 is an apocalyptic number.

It is an amenable number.

4996542021 is a deficient number, since it is larger than the sum of its proper divisors (1665514011).

4996542021 is a wasteful number, since it uses less digits than its factorization.

4996542021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665514010.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 4996542021 is about 70686.2222855345. Note that the first 4 decimals coincide. The cubic root of 4996542021 is about 1709.5816517042.

The spelling of 4996542021 in words is "four billion, nine hundred ninety-six million, five hundred forty-two thousand, twenty-one".