1045521420 has 48 divisors (see below), whose sum is σ = 3099666528. Its totient is φ = 262405120.

The previous prime is 1045521409. The next prime is 1045521461. The reversal of 1045521420 is 241255401.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 511491 + ... + 513530.

It is an arithmetic number, because the mean of its divisors is an integer number (64576386).

Almost surely, 2^1045521420 is an apocalyptic number.

1045521420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045521420 is an abundant number, since it is smaller than the sum of its proper divisors (2054145108).

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

1045521420 is a wasteful number, since it uses less digits than its factorization.

1045521420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025050 (or 1025048 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1045521420 is about 32334.5236550656. The cubic root of 1045521420 is about 1014.9492140540.

Adding to 1045521420 its reverse (241255401), we get a palindrome (1286776821).

The spelling of 1045521420 in words is "one billion, forty-five million, five hundred twenty-one thousand, four hundred twenty".