42121453 has 4 divisors (see below), whose sum is σ = 45950688. Its totient is φ = 38292220.

The previous prime is 42121399. The next prime is 42121459. The reversal of 42121453 is 35412124.

42121453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42121453 - 2¹³ = 42113261 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 (42121459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914601 + ... + 1914622.

It is an arithmetic number, because the mean of its divisors is an integer number (11487672).

Almost surely, 2^42121453 is an apocalyptic number.

It is an amenable number.

42121453 is a deficient number, since it is larger than the sum of its proper divisors (3829235).

42121453 is a wasteful number, since it uses less digits than its factorization.

42121453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829234.

The product of its digits is 960, while the sum is 22.

The square root of 42121453 is about 6490.1042364511. The cubic root of 42121453 is about 347.9374006615.

Adding to 42121453 its reverse (35412124), we get a palindrome (77533577).

It can be divided in two parts, 4212 and 1453, that added together give a palindrome (5665).

The spelling of 42121453 in words is "forty-two million, one hundred twenty-one thousand, four hundred fifty-three".