3975242 has 4 divisors (see below), whose sum is σ = 5962866. Its totient is φ = 1987620.

The previous prime is 3975239. The next prime is 3975247. The reversal of 3975242 is 2425793.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3682561 + 292681 = 1919^2 + 541^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3975199 and 3975208.

It is not an unprimeable number, because it can be changed into a prime (3975247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993809 + ... + 993812.

Almost surely, 2^3975242 is an apocalyptic number.

3975242 is a deficient number, since it is larger than the sum of its proper divisors (1987624).

3975242 is a wasteful number, since it uses less digits than its factorization.

3975242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987623.

The product of its digits is 15120, while the sum is 32.

The square root of 3975242 is about 1993.8008927674. The cubic root of 3975242 is about 158.4119198679.

The spelling of 3975242 in words is "three million, nine hundred seventy-five thousand, two hundred forty-two".