1140343420 has 12 divisors (see below), whose sum is σ = 2394721224. Its totient is φ = 456137360.

The previous prime is 1140343411. The next prime is 1140343471. The reversal of 1140343420 is 243430411.

It is a junction number, because it is equal to n+sod(n) for n = 1140343391 and 1140343400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28508566 + ... + 28508605.

It is an arithmetic number, because the mean of its divisors is an integer number (199560102).

Almost surely, 2^1140343420 is an apocalyptic number.

1140343420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140343420 is an abundant number, since it is smaller than the sum of its proper divisors (1254377804).

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

1140343420 is a wasteful number, since it uses less digits than its factorization.

1140343420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57017180 (or 57017178 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1140343420 is about 33768.9712606114. The cubic root of 1140343420 is about 1044.7488144244.

Adding to 1140343420 its reverse (243430411), we get a palindrome (1383773831).

The spelling of 1140343420 in words is "one billion, one hundred forty million, three hundred forty-three thousand, four hundred twenty".