45121040 has 20 divisors (see below), whose sum is σ = 104906604. Its totient is φ = 18048384.

The previous prime is 45121039. The next prime is 45121079. The reversal of 45121040 is 4012154.

45121040 = 34² + 35² + ... + 513².

It can be written as a sum of positive squares in 2 ways, for example, as 17073424 + 28047616 = 4132^2 + 5296^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281927 + ... + 282086.

Almost surely, 2^45121040 is an apocalyptic number.

45121040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45121040 is an abundant number, since it is smaller than the sum of its proper divisors (59785564).

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

45121040 is a wasteful number, since it uses less digits than its factorization.

45121040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564026 (or 564020 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 45121040 is about 6717.2196629260. The cubic root of 45121040 is about 356.0079533635.

Adding to 45121040 its reverse (4012154), we get a palindrome (49133194).

The spelling of 45121040 in words is "forty-five million, one hundred twenty-one thousand, forty".