42581053 has 4 divisors (see below), whose sum is σ = 42615328. Its totient is φ = 42546780.

The previous prime is 42581047. The next prime is 42581081. The reversal of 42581053 is 35018524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42581053 - 2⁹ = 42580541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42581003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15201 + ... + 17782.

It is an arithmetic number, because the mean of its divisors is an integer number (10653832).

Almost surely, 2^42581053 is an apocalyptic number.

It is an amenable number.

42581053 is a deficient number, since it is larger than the sum of its proper divisors (34275).

42581053 is a wasteful number, since it uses less digits than its factorization.

42581053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34274.

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

The square root of 42581053 is about 6525.4159254411. The cubic root of 42581053 is about 349.1983093113.

Adding to 42581053 its reverse (35018524), we get a palindrome (77599577).

The spelling of 42581053 in words is "forty-two million, five hundred eighty-one thousand, fifty-three".