4200731 has 2 divisors, whose sum is σ = 4200732. Its totient is φ = 4200730.

The previous prime is 4200709. The next prime is 4200733. The reversal of 4200731 is 1370024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4200731 - 2¹⁰ = 4199707 is a prime.

It is a super-2 number, since 2×4200731² = 35292281868722, which contains 22 as substring.

Together with 4200733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4200733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100365 + 2100366.

It is an arithmetic number, because the mean of its divisors is an integer number (2100366).

Almost surely, 2^4200731 is an apocalyptic number.

4200731 is a deficient number, since it is larger than the sum of its proper divisors (1).

4200731 is an equidigital number, since it uses as much as digits as its factorization.

4200731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 4200731 is about 2049.5684911708. The cubic root of 4200731 is about 161.3522245066.

Adding to 4200731 its reverse (1370024), we get a palindrome (5570755).

The spelling of 4200731 in words is "four million, two hundred thousand, seven hundred thirty-one".