1875121 has 4 divisors (see below), whose sum is σ = 1956672. Its totient is φ = 1793572.

The previous prime is 1875109. The next prime is 1875131. The reversal of 1875121 is 1215781.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1215781 = 7 ⋅173683.

It is a cyclic number.

It is not a de Polignac number, because 1875121 - 2⁷ = 1874993 is a prime.

It is a Duffinian number.

1875121 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1875131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40741 + ... + 40786.

It is an arithmetic number, because the mean of its divisors is an integer number (489168).

2^1875121 is an apocalyptic number.

It is an amenable number.

1875121 is a deficient number, since it is larger than the sum of its proper divisors (81551).

1875121 is an equidigital number, since it uses as much as digits as its factorization.

1875121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81550.

The product of its digits is 560, while the sum is 25.

The square root of 1875121 is about 1369.3505760031. The cubic root of 1875121 is about 123.3132562076.

The spelling of 1875121 in words is "one million, eight hundred seventy-five thousand, one hundred twenty-one".