4078942 has 16 divisors (see below), whose sum is σ = 7142400. Its totient is φ = 1710648.

The previous prime is 4078897. The next prime is 4078951. The reversal of 4078942 is 2498704.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4078898 and 4078907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2442 + ... + 3757.

It is an arithmetic number, because the mean of its divisors is an integer number (446400).

Almost surely, 2^4078942 is an apocalyptic number.

4078942 is a deficient number, since it is larger than the sum of its proper divisors (3063458).

4078942 is a wasteful number, since it uses less digits than its factorization.

4078942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4078942 is about 2019.6390766669. The cubic root of 4078942 is about 159.7775815811. Note that the first 3 decimals are identical.

The spelling of 4078942 in words is "four million, seventy-eight thousand, nine hundred forty-two".