1445042020 has 24 divisors (see below), whose sum is σ = 3039220800. Its totient is φ = 577134432.

The previous prime is 1445041991. The next prime is 1445042021. The reversal of 1445042020 is 202405441.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1445041982 and 1445042000.

It is not an unprimeable number, because it can be changed into a prime (1445042021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41640 + ... + 67999.

It is an arithmetic number, because the mean of its divisors is an integer number (126634200).

Almost surely, 2^1445042020 is an apocalyptic number.

1445042020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445042020 is an abundant number, since it is smaller than the sum of its proper divisors (1594178780).

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

1445042020 is a wasteful number, since it uses less digits than its factorization.

1445042020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110307 (or 110305 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1445042020 is about 38013.7083168691. The cubic root of 1445042020 is about 1130.5596778509.

Adding to 1445042020 its reverse (202405441), we get a palindrome (1647447461).

The spelling of 1445042020 in words is "one billion, four hundred forty-five million, forty-two thousand, twenty".