3500642 has 8 divisors (see below), whose sum is σ = 5323116. Its totient is φ = 1726272.

The previous prime is 3500593. The next prime is 3500671. The reversal of 3500642 is 2460053.

3500642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 1871²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 3500641 + 1 = 1871^2 + 1^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11843 + ... + 12134.

Almost surely, 2^3500642 is an apocalyptic number.

3500642 is a deficient number, since it is larger than the sum of its proper divisors (1822474).

3500642 is a wasteful number, since it uses less digits than its factorization.

3500642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24052.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3500642 is about 1871.0002672368. Note that the first 3 decimals coincide. The cubic root of 3500642 is about 151.8387313125.

Adding to 3500642 its reverse (2460053), we get a palindrome (5960695).

The spelling of 3500642 in words is "three million, five hundred thousand, six hundred forty-two".