45420210 has 128 divisors (see below), whose sum is σ = 135717120. Its totient is φ = 10713600.

The previous prime is 45420187. The next prime is 45420211. The reversal of 45420210 is 1202454.

45420210 = T₂₀₄ + T₂₀₅ + ... + T₆₅₄.

45420210 is a `hidden beast` number, since 454 + 2 + 0 + 210 = 666.

45420210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45420211) 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 63 ways as a sum of consecutive naturals, for example, 121584 + ... + 121956.

It is an arithmetic number, because the mean of its divisors is an integer number (1060290).

Almost surely, 2^45420210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45420210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67858560).

45420210 is an abundant number, since it is smaller than the sum of its proper divisors (90296910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45420210 is a wasteful number, since it uses less digits than its factorization.

45420210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 45420210 is about 6739.4517581180. The cubic root of 45420210 is about 356.7930443740.

Adding to 45420210 its reverse (1202454), we get a palindrome (46622664).

The spelling of 45420210 in words is "forty-five million, four hundred twenty thousand, two hundred ten".