3942551 has 2 divisors, whose sum is σ = 3942552. Its totient is φ = 3942550.

The previous prime is 3942527. The next prime is 3942553. The reversal of 3942551 is 1552493.

3942551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3942551 - 2¹⁸ = 3680407 is a prime.

It is a Sophie Germain prime.

Together with 3942553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3942553) by changing a digit.

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 as a sum of consecutive naturals, namely, 1971275 + 1971276.

It is an arithmetic number, because the mean of its divisors is an integer number (1971276).

Almost surely, 2^3942551 is an apocalyptic number.

3942551 is a deficient number, since it is larger than the sum of its proper divisors (1).

3942551 is an equidigital number, since it uses as much as digits as its factorization.

3942551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 29.

The square root of 3942551 is about 1985.5858077656. The cubic root of 3942551 is about 157.9764826398.

The spelling of 3942551 in words is "three million, nine hundred forty-two thousand, five hundred fifty-one".