45040423 has 8 divisors (see below), whose sum is σ = 46172160. Its totient is φ = 43921080.

The previous prime is 45040421. The next prime is 45040439. The reversal of 45040423 is 32404054.

It is a happy number.

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 45040423 - 2¹ = 45040421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45040394 and 45040403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45040421) 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, 4488 + ... + 10498.

It is an arithmetic number, because the mean of its divisors is an integer number (5771520).

Almost surely, 2^45040423 is an apocalyptic number.

45040423 is a deficient number, since it is larger than the sum of its proper divisors (1131737).

45040423 is a wasteful number, since it uses less digits than its factorization.

45040423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6197.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 45040423 is about 6711.2162087061. The cubic root of 45040423 is about 355.7958024990.

Adding to 45040423 its reverse (32404054), we get a palindrome (77444477).

The spelling of 45040423 in words is "forty-five million, forty thousand, four hundred twenty-three".