4021137 has 8 divisors (see below), whose sum is σ = 5957280. Its totient is φ = 2680740.

The previous prime is 4021099. The next prime is 4021151. The reversal of 4021137 is 7311204.

It is not a de Polignac number, because 4021137 - 2⁷ = 4021009 is a prime.

4021137 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4021177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74439 + ... + 74492.

It is an arithmetic number, because the mean of its divisors is an integer number (744660).

Almost surely, 2^4021137 is an apocalyptic number.

It is an amenable number.

4021137 is a deficient number, since it is larger than the sum of its proper divisors (1936143).

4021137 is a wasteful number, since it uses less digits than its factorization.

4021137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148940 (or 148934 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 4021137 is about 2005.2772875590. The cubic root of 4021137 is about 159.0192215993.

The spelling of 4021137 in words is "four million, twenty-one thousand, one hundred thirty-seven".