4202991 has 12 divisors (see below), whose sum is σ = 6538168. Its totient is φ = 2586384.

The previous prime is 4202981. The next prime is 4202993. The reversal of 4202991 is 1992024.

It is not a de Polignac number, because 4202991 - 2⁵ = 4202959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4202993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17845 + ... + 18078.

Almost surely, 2^4202991 is an apocalyptic number.

4202991 is a deficient number, since it is larger than the sum of its proper divisors (2335177).

4202991 is a wasteful number, since it uses less digits than its factorization.

4202991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35942 (or 35939 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 4202991 is about 2050.1197525998. The cubic root of 4202991 is about 161.3811552373.

The spelling of 4202991 in words is "four million, two hundred two thousand, nine hundred ninety-one".