45030420 has 36 divisors (see below), whose sum is σ = 136592820. Its totient is φ = 12008064.

The previous prime is 45030413. The next prime is 45030421. The reversal of 45030420 is 2403054.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35070084 + 9960336 = 5922^2 + 3156^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 45030393 and 45030402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45030421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124905 + ... + 125264.

It is an arithmetic number, because the mean of its divisors is an integer number (3794245).

Almost surely, 2^45030420 is an apocalyptic number.

It is an amenable number.

45030420 is an abundant number, since it is smaller than the sum of its proper divisors (91562400).

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

45030420 is a wasteful number, since it uses less digits than its factorization.

45030420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250184 (or 250179 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 45030420 is about 6710.4709223720. The cubic root of 45030420 is about 355.7694610581.

Adding to 45030420 its reverse (2403054), we get a palindrome (47433474).

The spelling of 45030420 in words is "forty-five million, thirty thousand, four hundred twenty".