42641439 has 4 divisors (see below), whose sum is σ = 56855256. Its totient is φ = 28427624.

The previous prime is 42641419. The next prime is 42641449. The reversal of 42641439 is 93414624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42641439 - 2¹¹ = 42639391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42641419) 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, 7106904 + ... + 7106909.

It is an arithmetic number, because the mean of its divisors is an integer number (14213814).

Almost surely, 2^42641439 is an apocalyptic number.

42641439 is a deficient number, since it is larger than the sum of its proper divisors (14213817).

42641439 is a wasteful number, since it uses less digits than its factorization.

42641439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14213816.

The product of its digits is 20736, while the sum is 33.

The square root of 42641439 is about 6530.0412709262. The cubic root of 42641439 is about 349.3633023265.

The spelling of 42641439 in words is "forty-two million, six hundred forty-one thousand, four hundred thirty-nine".