42021353 has 16 divisors (see below), whose sum is σ = 46854720. Its totient is φ = 37368000.

The previous prime is 42021349. The next prime is 42021359. The reversal of 42021353 is 35312024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42021353 - 2² = 42021349 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42021359) 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 15 ways as a sum of consecutive naturals, for example, 120926 + ... + 121272.

It is an arithmetic number, because the mean of its divisors is an integer number (2928420).

Almost surely, 2^42021353 is an apocalyptic number.

It is an amenable number.

42021353 is a deficient number, since it is larger than the sum of its proper divisors (4833367).

42021353 is a wasteful number, since it uses less digits than its factorization.

42021353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 42021353 is about 6482.3879087879. The cubic root of 42021353 is about 347.6615621251.

Adding to 42021353 its reverse (35312024), we get a palindrome (77333377).

It can be divided in two parts, 4202 and 1353, that added together give a palindrome (5555).

The spelling of 42021353 in words is "forty-two million, twenty-one thousand, three hundred fifty-three".