42053921 has 8 divisors (see below), whose sum is σ = 51758784. Its totient is φ = 33273360.

The previous prime is 42053917. The next prime is 42053923. The reversal of 42053921 is 12935024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42053921 - 2² = 42053917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42053923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230975 + ... + 231156.

It is an arithmetic number, because the mean of its divisors is an integer number (6469848).

Almost surely, 2^42053921 is an apocalyptic number.

It is an amenable number.

42053921 is a deficient number, since it is larger than the sum of its proper divisors (9704863).

42053921 is a wasteful number, since it uses less digits than its factorization.

42053921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462151.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 42053921 is about 6484.8994595136. The cubic root of 42053921 is about 347.7513555044.

Adding to 42053921 its reverse (12935024), we get a palindrome (54988945).

The spelling of 42053921 in words is "forty-two million, fifty-three thousand, nine hundred twenty-one".