42438485 has 8 divisors (see below), whose sum is σ = 52168536. Its totient is φ = 33122560.

The previous prime is 42438479. The next prime is 42438491. The reversal of 42438485 is 58483424.

It is an interprime number because it is at equal distance from previous prime (42438479) and next prime (42438491).

It can be written as a sum of positive squares in 4 ways, for example, as 538756 + 41899729 = 734^2 + 6473^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42438485 - 2⁶ = 42438421 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 7 ways as a sum of consecutive naturals, for example, 103304 + ... + 103713.

It is an arithmetic number, because the mean of its divisors is an integer number (6521067).

Almost surely, 2^42438485 is an apocalyptic number.

It is an amenable number.

42438485 is a deficient number, since it is larger than the sum of its proper divisors (9730051).

42438485 is a wasteful number, since it uses less digits than its factorization.

42438485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207063.

The product of its digits is 122880, while the sum is 38.

The square root of 42438485 is about 6514.4827116203. The cubic root of 42438485 is about 348.8081500994.

It can be divided in two parts, 4243 and 8485, that multiplied together give a triangular number (36001855 = T₈₄₈₅).

The spelling of 42438485 in words is "forty-two million, four hundred thirty-eight thousand, four hundred eighty-five".