45420000 has 120 divisors (see below), whose sum is σ = 149183496. Its totient is φ = 12096000.

The previous prime is 45419999. The next prime is 45420017. The reversal of 45420000 is 2454.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59622 + ... + 60378.

Almost surely, 2^45420000 is an apocalyptic number.

45420000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74591748).

45420000 is an abundant number, since it is smaller than the sum of its proper divisors (103763496).

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

45420000 is an equidigital number, since it uses as much as digits as its factorization.

45420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 45420000 is about 6739.4361781977. The cubic root of 45420000 is about 356.7924944965.

Adding to 45420000 its reverse (2454), we get a palindrome (45422454).

The spelling of 45420000 in words is "forty-five million, four hundred twenty thousand".