3142521 has 12 divisors (see below), whose sum is σ = 4662372. Its totient is φ = 2038176.

The previous prime is 3142519. The next prime is 3142547. The reversal of 3142521 is 1252413.

3142521 is a `hidden beast` number, since 3 + 142 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2359296 + 783225 = 1536^2 + 885^2 .

It is not a de Polignac number, because 3142521 - 2¹ = 3142519 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3142494 and 3142503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3142511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4386 + ... + 5051.

It is an arithmetic number, because the mean of its divisors is an integer number (388531).

Almost surely, 2^3142521 is an apocalyptic number.

It is an amenable number.

3142521 is a deficient number, since it is larger than the sum of its proper divisors (1519851).

3142521 is a wasteful number, since it uses less digits than its factorization.

3142521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480 (or 9477 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 3142521 is about 1772.7157132490. The cubic root of 3142521 is about 146.4736136553.

Adding to 3142521 its reverse (1252413), we get a palindrome (4394934).

It can be divided in two parts, 3142 and 521, that added together give a palindrome (3663).

The spelling of 3142521 in words is "three million, one hundred forty-two thousand, five hundred twenty-one".