3942403 has 2 divisors, whose sum is σ = 3942404. Its totient is φ = 3942402.

The previous prime is 3942401. The next prime is 3942409. The reversal of 3942403 is 3042493.

It is a weak prime.

It is an emirp because it is prime and its reverse (3042493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3942403 - 2¹ = 3942401 is a prime.

Together with 3942401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3942401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971201 + 1971202.

It is an arithmetic number, because the mean of its divisors is an integer number (1971202).

Almost surely, 2^3942403 is an apocalyptic number.

3942403 is a deficient number, since it is larger than the sum of its proper divisors (1).

3942403 is an equidigital number, since it uses as much as digits as its factorization.

3942403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 3942403 is about 1985.5485388174. The cubic root of 3942403 is about 157.9745058476.

Adding to 3942403 its reverse (3042493), we get a palindrome (6984896).

The spelling of 3942403 in words is "three million, nine hundred forty-two thousand, four hundred three".