42434665 has 16 divisors (see below), whose sum is σ = 62673408. Its totient is φ = 26859456.

The previous prime is 42434647. The next prime is 42434677. The reversal of 42434665 is 56643424.

It is not a de Polignac number, because 42434665 - 2⁷ = 42434537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42434665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46177 + ... + 47086.

It is an arithmetic number, because the mean of its divisors is an integer number (3917088).

Almost surely, 2^42434665 is an apocalyptic number.

It is an amenable number.

42434665 is a deficient number, since it is larger than the sum of its proper divisors (20238743).

42434665 is a wasteful number, since it uses less digits than its factorization.

42434665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93288.

The product of its digits is 69120, while the sum is 34.

The square root of 42434665 is about 6514.1895121343. The cubic root of 42434665 is about 348.7976840714.

The spelling of 42434665 in words is "forty-two million, four hundred thirty-four thousand, six hundred sixty-five".