3690242 has 8 divisors (see below), whose sum is σ = 5544396. Its totient is φ = 1842112.

The previous prime is 3690233. The next prime is 3690251. The reversal of 3690242 is 2420963.

It is a Cunningham number, because it is equal to 1921²+1.

It is an interprime number because it is at equal distance from previous prime (3690233) and next prime (3690251).

It can be written as a sum of positive squares in 2 ways, for example, as 3690241 + 1 = 1921^2 + 1^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638 + ... + 2790.

Almost surely, 2^3690242 is an apocalyptic number.

3690242 is a deficient number, since it is larger than the sum of its proper divisors (1854154).

3690242 is a wasteful number, since it uses less digits than its factorization.

3690242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 3690242 is about 1921.0002602811. Note that the first 3 decimals coincide. The cubic root of 3690242 is about 154.5319491396.

The spelling of 3690242 in words is "three million, six hundred ninety thousand, two hundred forty-two".