1142388620 has 12 divisors (see below), whose sum is σ = 2399016144. Its totient is φ = 456955440.

The previous prime is 1142388589. The next prime is 1142388631. The reversal of 1142388620 is 268832411.

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, 28559696 + ... + 28559735.

It is an arithmetic number, because the mean of its divisors is an integer number (199918012).

Almost surely, 2^1142388620 is an apocalyptic number.

1142388620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142388620 is an abundant number, since it is smaller than the sum of its proper divisors (1256627524).

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

1142388620 is a wasteful number, since it uses less digits than its factorization.

1142388620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57119440 (or 57119438 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1142388620 is about 33799.2399322825. The cubic root of 1142388620 is about 1045.3730252572.

The spelling of 1142388620 in words is "one billion, one hundred forty-two million, three hundred eighty-eight thousand, six hundred twenty".