42108553 has 16 divisors (see below), whose sum is σ = 44692560. Its totient is φ = 39626496.

The previous prime is 42108533. The next prime is 42108557. The reversal of 42108553 is 35580124.

It can be written as a sum of positive squares in 8 ways, for example, as 20178064 + 21930489 = 4492^2 + 4683^2 .

It is a cyclic number.

It is not a de Polignac number, because 42108553 - 2¹³ = 42100361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42108557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213651 + ... + 213847.

It is an arithmetic number, because the mean of its divisors is an integer number (2793285).

Almost surely, 2^42108553 is an apocalyptic number.

It is an amenable number.

42108553 is a deficient number, since it is larger than the sum of its proper divisors (2584007).

42108553 is a wasteful number, since it uses less digits than its factorization.

42108553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 42108553 is about 6489.1103396382. The cubic root of 42108553 is about 347.9018775854.

Adding to 42108553 its reverse (35580124), we get a palindrome (77688677).

The spelling of 42108553 in words is "forty-two million, one hundred eight thousand, five hundred fifty-three".