42005246 has 4 divisors (see below), whose sum is σ = 63007872. Its totient is φ = 21002622.

The previous prime is 42005237. The next prime is 42005269. The reversal of 42005246 is 64250024.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501310 + ... + 10501313.

It is an arithmetic number, because the mean of its divisors is an integer number (15751968).

Almost surely, 2^42005246 is an apocalyptic number.

42005246 is a deficient number, since it is larger than the sum of its proper divisors (21002626).

42005246 is a wasteful number, since it uses less digits than its factorization.

42005246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21002625.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42005246 is about 6481.1454234572. The cubic root of 42005246 is about 347.6171362955.

The spelling of 42005246 in words is "forty-two million, five thousand, two hundred forty-six".