1445402420 has 48 divisors (see below), whose sum is σ = 3784330368. Its totient is φ = 450514560.

The previous prime is 1445402419. The next prime is 1445402437. The reversal of 1445402420 is 242045441.

It is a self number, because there is not a number n which added to its sum of digits gives 1445402420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467747 + ... + 470826.

It is an arithmetic number, because the mean of its divisors is an integer number (78840216).

Almost surely, 2^1445402420 is an apocalyptic number.

1445402420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445402420 is an abundant number, since it is smaller than the sum of its proper divisors (2338927948).

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

1445402420 is a wasteful number, since it uses less digits than its factorization.

1445402420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938600 (or 938598 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1445402420 is about 38018.4484165254. The cubic root of 1445402420 is about 1130.6536589332.

Adding to 1445402420 its reverse (242045441), we get a palindrome (1687447861).

The spelling of 1445402420 in words is "one billion, four hundred forty-five million, four hundred two thousand, four hundred twenty".