3145121 has 4 divisors (see below), whose sum is σ = 3594432. Its totient is φ = 2695812.

The previous prime is 3145117. The next prime is 3145123. The reversal of 3145121 is 1215413.

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.

It is not a de Polignac number, because 3145121 - 2² = 3145117 is a prime.

It is a super-3 number, since 3×3145121³ = 93332592615643819683, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3145121.

It is not an unprimeable number, because it can be changed into a prime (3145123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224645 + ... + 224658.

It is an arithmetic number, because the mean of its divisors is an integer number (898608).

Almost surely, 2^3145121 is an apocalyptic number.

It is an amenable number.

3145121 is a deficient number, since it is larger than the sum of its proper divisors (449311).

3145121 is an equidigital number, since it uses as much as digits as its factorization.

3145121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449310.

The product of its digits is 120, while the sum is 17.

The square root of 3145121 is about 1773.4488997431. The cubic root of 3145121 is about 146.5139980490.

The spelling of 3145121 in words is "three million, one hundred forty-five thousand, one hundred twenty-one".