42005356 has 6 divisors (see below), whose sum is σ = 73509380. Its totient is φ = 21002676.

The previous prime is 42005347. The next prime is 42005389. The reversal of 42005356 is 65350024.

It is a self number, because there is not a number n which added to its sum of digits gives 42005356.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250666 + ... + 5250673.

Almost surely, 2^42005356 is an apocalyptic number.

It is an amenable number.

42005356 is a deficient number, since it is larger than the sum of its proper divisors (31504024).

42005356 is a wasteful number, since it uses less digits than its factorization.

42005356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10501343 (or 10501341 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 42005356 is about 6481.1539096059. The cubic root of 42005356 is about 347.6174397326.

The spelling of 42005356 in words is "forty-two million, five thousand, three hundred fifty-six".