4139042 has 8 divisors (see below), whose sum is σ = 6376476. Its totient is φ = 2013552.

The previous prime is 4139029. The next prime is 4139063. The reversal of 4139042 is 2409314.

It can be written as a sum of positive squares in 2 ways, for example, as 4116841 + 22201 = 2029^2 + 149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4138999 and 4139017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27893 + ... + 28040.

Almost surely, 2^4139042 is an apocalyptic number.

4139042 is a deficient number, since it is larger than the sum of its proper divisors (2237434).

4139042 is a wasteful number, since it uses less digits than its factorization.

4139042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55972.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 4139042 is about 2034.4635656605. The cubic root of 4139042 is about 160.5584909889.

The spelling of 4139042 in words is "four million, one hundred thirty-nine thousand, forty-two".