3145021 has 8 divisors (see below), whose sum is σ = 3549600. Its totient is φ = 2760240.

The previous prime is 3145019. The next prime is 3145027. The reversal of 3145021 is 1205413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3145021 - 2¹ = 3145019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3144986 and 3145004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4611 + ... + 5248.

It is an arithmetic number, because the mean of its divisors is an integer number (443700).

Almost surely, 2^3145021 is an apocalyptic number.

It is an amenable number.

3145021 is a deficient number, since it is larger than the sum of its proper divisors (404579).

3145021 is a wasteful number, since it uses less digits than its factorization.

3145021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9899.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3145021 is about 1773.4207058676. The cubic root of 3145021 is about 146.5124452147.

It can be divided in two parts, 314 and 5021, that added together give a palindrome (5335).

The spelling of 3145021 in words is "three million, one hundred forty-five thousand, twenty-one".