42836645 has 6 divisors (see below), whose sum is σ = 51421542. Its totient is φ = 34257608.

The previous prime is 42836627. The next prime is 42836653. The reversal of 42836645 is 54663824.

It can be written as a sum of positive squares in only one way, i.e., 34269316 + 8567329 = 5854^2 + 2927^2 .

It is not a de Polignac number, because 42836645 - 2¹⁰ = 42835621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42836599 and 42836608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13172 + ... + 16098.

It is an arithmetic number, because the mean of its divisors is an integer number (8570257).

Almost surely, 2^42836645 is an apocalyptic number.

It is an amenable number.

42836645 is a deficient number, since it is larger than the sum of its proper divisors (8584897).

42836645 is an frugal number, since it uses more digits than its factorization.

42836645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859 (or 2932 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 42836645 is about 6544.9709701419. The cubic root of 42836645 is about 349.8956015160.

It can be divided in two parts, 428 and 36645, that added together give a palindrome (37073).

The spelling of 42836645 in words is "forty-two million, eight hundred thirty-six thousand, six hundred forty-five".