42026039 has 4 divisors (see below), whose sum is σ = 45846600. Its totient is φ = 38205480.

The previous prime is 42026021. The next prime is 42026041. The reversal of 42026039 is 93062024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42026039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42025999 and 42026017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42026009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910264 + ... + 1910285.

It is an arithmetic number, because the mean of its divisors is an integer number (11461650).

Almost surely, 2^42026039 is an apocalyptic number.

42026039 is a deficient number, since it is larger than the sum of its proper divisors (3820561).

42026039 is a wasteful number, since it uses less digits than its factorization.

42026039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820560.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 42026039 is about 6482.7493395935. The cubic root of 42026039 is about 347.6744847736.

The spelling of 42026039 in words is "forty-two million, twenty-six thousand, thirty-nine".