45420023 has 8 divisors (see below), whose sum is σ = 50177280. Its totient is φ = 40767480.

The previous prime is 45420017. The next prime is 45420043. The reversal of 45420023 is 32002454.

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 45420023 - 2¹² = 45415927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45419977 and 45420004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45420043) 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, 25265 + ... + 27002.

It is an arithmetic number, because the mean of its divisors is an integer number (6272160).

Almost surely, 2^45420023 is an apocalyptic number.

45420023 is a deficient number, since it is larger than the sum of its proper divisors (4757257).

45420023 is a wasteful number, since it uses less digits than its factorization.

45420023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52357.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 45420023 is about 6739.4378845717. The cubic root of 45420023 is about 356.7925547212.

Adding to 45420023 its reverse (32002454), we get a palindrome (77422477).

Subtracting from 45420023 its reverse (32002454), we obtain a square (13417569 = 3663²).

The spelling of 45420023 in words is "forty-five million, four hundred twenty thousand, twenty-three".