1142506920 has 32 divisors (see below), whose sum is σ = 3427521120. Its totient is φ = 304668480.

The previous prime is 1142506919. The next prime is 1142506931. The reversal of 1142506920 is 296052411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4760326 + ... + 4760565.

It is an arithmetic number, because the mean of its divisors is an integer number (107110035).

Almost surely, 2^1142506920 is an apocalyptic number.

1142506920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142506920 is an abundant number, since it is smaller than the sum of its proper divisors (2285014200).

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

1142506920 is a wasteful number, since it uses less digits than its factorization.

1142506920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9520905 (or 9520901 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1142506920 is about 33800.9899263320. The cubic root of 1142506920 is about 1045.4091085299.

The spelling of 1142506920 in words is "one billion, one hundred forty-two million, five hundred six thousand, nine hundred twenty".