1142124240 has 80 divisors (see below), whose sum is σ = 3543844608. Its totient is φ = 304286208.

The previous prime is 1142124229. The next prime is 1142124241. The reversal of 1142124240 is 424212411.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142124241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478089 + ... + 480471.

Almost surely, 2^1142124240 is an apocalyptic number.

1142124240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142124240 is an abundant number, since it is smaller than the sum of its proper divisors (2401720368).

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

1142124240 is a wasteful number, since it uses less digits than its factorization.

1142124240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396 (or 4390 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1142124240 is about 33795.3286712824. The cubic root of 1142124240 is about 1045.2923763903.

Adding to 1142124240 its reverse (424212411), we get a palindrome (1566336651).

The spelling of 1142124240 in words is "one billion, one hundred forty-two million, one hundred twenty-four thousand, two hundred forty".