42623885 has 4 divisors (see below), whose sum is σ = 51148668. Its totient is φ = 34099104.

The previous prime is 42623873. The next prime is 42623891. The reversal of 42623885 is 58832624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19333609 + 23290276 = 4397^2 + 4826^2 .

It is a cyclic number.

It is not a de Polignac number, because 42623885 - 2⁴ = 42623869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4262384 + ... + 4262393.

It is an arithmetic number, because the mean of its divisors is an integer number (12787167).

Almost surely, 2^42623885 is an apocalyptic number.

It is an amenable number.

42623885 is a deficient number, since it is larger than the sum of its proper divisors (8524783).

42623885 is an equidigital number, since it uses as much as digits as its factorization.

42623885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8524782.

The product of its digits is 92160, while the sum is 38.

The square root of 42623885 is about 6528.6970369286. The cubic root of 42623885 is about 349.3153554991.

The spelling of 42623885 in words is "forty-two million, six hundred twenty-three thousand, eight hundred eighty-five".