42039635 has 16 divisors (see below), whose sum is σ = 55497312. Its totient is φ = 30569440.

The previous prime is 42039631. The next prime is 42039677. The reversal of 42039635 is 53693024.

It is not a de Polignac number, because 42039635 - 2² = 42039631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42039631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3497 + ... + 9813.

It is an arithmetic number, because the mean of its divisors is an integer number (3468582).

Almost surely, 2^42039635 is an apocalyptic number.

42039635 is a deficient number, since it is larger than the sum of its proper divisors (13457677).

42039635 is an equidigital number, since it uses as much as digits as its factorization.

42039635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355 (or 6333 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 42039635 is about 6483.7978839566. The cubic root of 42039635 is about 347.7119732193.

The spelling of 42039635 in words is "forty-two million, thirty-nine thousand, six hundred thirty-five".