42048681 has 4 divisors (see below), whose sum is σ = 56064912. Its totient is φ = 28032452.

The previous prime is 42048659. The next prime is 42048683. The reversal of 42048681 is 18684024.

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 42048681 - 2⁷ = 42048553 is a prime.

It is a super-2 number, since 2×42048681² = 3536183147679522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42048683) 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, 7008111 + ... + 7008116.

It is an arithmetic number, because the mean of its divisors is an integer number (14016228).

Almost surely, 2^42048681 is an apocalyptic number.

It is an amenable number.

42048681 is a deficient number, since it is larger than the sum of its proper divisors (14016231).

42048681 is a wasteful number, since it uses less digits than its factorization.

42048681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14016230.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 42048681 is about 6484.4954314118. The cubic root of 42048681 is about 347.7369114070.

The spelling of 42048681 in words is "forty-two million, forty-eight thousand, six hundred eighty-one".