3521642 has 8 divisors (see below), whose sum is σ = 5295396. Its totient is φ = 1756512.

The previous prime is 3521633. The next prime is 3521653. The reversal of 3521642 is 2461253.

It can be written as a sum of positive squares in 2 ways, for example, as 2563201 + 958441 = 1601^2 + 979^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013 + ... + 2840.

Almost surely, 2^3521642 is an apocalyptic number.

3521642 is a deficient number, since it is larger than the sum of its proper divisors (1773754).

3521642 is a wasteful number, since it uses less digits than its factorization.

3521642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312.

The product of its digits is 1440, while the sum is 23.

The square root of 3521642 is about 1876.6038473796. The cubic root of 3521642 is about 152.1417479654.

Adding to 3521642 its reverse (2461253), we get a palindrome (5982895).

The spelling of 3521642 in words is "three million, five hundred twenty-one thousand, six hundred forty-two".