45142823 has 4 divisors (see below), whose sum is σ = 49246728. Its totient is φ = 41038920.

The previous prime is 45142807. The next prime is 45142829. The reversal of 45142823 is 32824154.

It is a happy number.

45142823 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.

It is a cyclic number.

It is not a de Polignac number, because 45142823 - 2⁴ = 45142807 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 (45142829) 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, 2051936 + ... + 2051957.

It is an arithmetic number, because the mean of its divisors is an integer number (12311682).

Almost surely, 2^45142823 is an apocalyptic number.

45142823 is a deficient number, since it is larger than the sum of its proper divisors (4103905).

45142823 is a wasteful number, since it uses less digits than its factorization.

45142823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103904.

The product of its digits is 7680, while the sum is 29.

The square root of 45142823 is about 6718.8408970596. The cubic root of 45142823 is about 356.0652339111.

Adding to 45142823 its reverse (32824154), we get a palindrome (77966977).

It can be divided in two parts, 4514 and 2823, that added together give a palindrome (7337).

The spelling of 45142823 in words is "forty-five million, one hundred forty-two thousand, eight hundred twenty-three".