1143463420 has 48 divisors (see below), whose sum is σ = 2645558496. Its totient is φ = 411680000.

The previous prime is 1143463379. The next prime is 1143463441. The reversal of 1143463420 is 243643411.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 3511 + ... + 47950.

It is an arithmetic number, because the mean of its divisors is an integer number (55115802).

Almost surely, 2^1143463420 is an apocalyptic number.

1143463420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143463420 is an abundant number, since it is smaller than the sum of its proper divisors (1502095076).

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

1143463420 is a wasteful number, since it uses less digits than its factorization.

1143463420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51582 (or 51580 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1143463420 is about 33815.1359600993. The cubic root of 1143463420 is about 1045.7007639176.

Subtracting from 1143463420 its reverse (243643411), we obtain a square (899820009 = 29997²).

The spelling of 1143463420 in words is "one billion, one hundred forty-three million, four hundred sixty-three thousand, four hundred twenty".