3948242 has 4 divisors (see below), whose sum is σ = 5922366. Its totient is φ = 1974120.

The previous prime is 3948229. The next prime is 3948247. The reversal of 3948242 is 2428493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2428493 = 179 ⋅13567.

It can be written as a sum of positive squares in only one way, i.e., 3136441 + 811801 = 1771^2 + 901^2 .

It is a super-2 number, since 2×3948242² = 31177229781128, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3¹² + 9³ + 4⁹ + 8 + 2¹³ + 4¹⁰ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 3948199 and 3948208.

It is not an unprimeable number, because it can be changed into a prime (3948247) by changing a digit.

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 as a sum of consecutive naturals, namely, 987059 + ... + 987062.

Almost surely, 2^3948242 is an apocalyptic number.

3948242 is a deficient number, since it is larger than the sum of its proper divisors (1974124).

3948242 is a wasteful number, since it uses less digits than its factorization.

3948242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974123.

The product of its digits is 13824, while the sum is 32.

The square root of 3948242 is about 1987.0183693162. The cubic root of 3948242 is about 158.0524581461.

The spelling of 3948242 in words is "three million, nine hundred forty-eight thousand, two hundred forty-two".