1143434420 has 24 divisors (see below), whose sum is σ = 2505613824. Its totient is φ = 437487776.

The previous prime is 1143434419. The next prime is 1143434437. The reversal of 1143434420 is 244343411.

It is a self number, because there is not a number n which added to its sum of digits gives 1143434420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242404 + ... + 1243323.

It is an arithmetic number, because the mean of its divisors is an integer number (104400576).

Almost surely, 2^1143434420 is an apocalyptic number.

1143434420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143434420 is an abundant number, since it is smaller than the sum of its proper divisors (1362179404).

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

1143434420 is a wasteful number, since it uses less digits than its factorization.

1143434420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485759 (or 2485757 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1143434420 is about 33814.7071553193. The cubic root of 1143434420 is about 1045.6919236469.

Adding to 1143434420 its reverse (244343411), we get a palindrome (1387777831).

It can be divided in two parts, 11434 and 34420, that added together give a palindrome (45854).

The spelling of 1143434420 in words is "one billion, one hundred forty-three million, four hundred thirty-four thousand, four hundred twenty".