42615469 has 4 divisors (see below), whose sum is σ = 45893596. Its totient is φ = 39337344.

The previous prime is 42615457. The next prime is 42615487. The reversal of 42615469 is 96451624.

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 11812969 + 30802500 = 3437^2 + 5550^2 .

It is a cyclic number.

It is not a de Polignac number, because 42615469 - 2²³ = 34226861 is a prime.

It is a super-2 number, since 2×42615469² = 3632156396179922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42615439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639044 + ... + 1639069.

It is an arithmetic number, because the mean of its divisors is an integer number (11473399).

Almost surely, 2^42615469 is an apocalyptic number.

It is an amenable number.

42615469 is a deficient number, since it is larger than the sum of its proper divisors (3278127).

42615469 is a wasteful number, since it uses less digits than its factorization.

42615469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278126.

The product of its digits is 51840, while the sum is 37.

The square root of 42615469 is about 6528.0524660882. The cubic root of 42615469 is about 349.2923634487.

It can be divided in two parts, 4261 and 5469, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 42615469 in words is "forty-two million, six hundred fifteen thousand, four hundred sixty-nine".