4125391 has 6 divisors (see below), whose sum is σ = 4192440. Its totient is φ = 4059396.

The previous prime is 4125383. The next prime is 4125403. The reversal of 4125391 is 1935214.

It is not a de Polignac number, because 4125391 - 2³ = 4125383 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4125311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4030 + ... + 4948.

It is an arithmetic number, because the mean of its divisors is an integer number (698740).

Almost surely, 2^4125391 is an apocalyptic number.

4125391 is a deficient number, since it is larger than the sum of its proper divisors (67049).

4125391 is an frugal number, since it uses more digits than its factorization.

4125391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 986 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 4125391 is about 2031.1058564240. The cubic root of 4125391 is about 160.3817835959.

The spelling of 4125391 in words is "four million, one hundred twenty-five thousand, three hundred ninety-one".