1011142320 has 80 divisors (see below), whose sum is σ = 3318939360. Its totient is φ = 253775872.

The previous prime is 1011142309. The next prime is 1011142331. The reversal of 1011142320 is 232411101.

It is an interprime number because it is at equal distance from previous prime (1011142309) and next prime (1011142331).

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

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1011142320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119835 + ... + 127994.

It is an arithmetic number, because the mean of its divisors is an integer number (41486742).

Almost surely, 2^1011142320 is an apocalyptic number.

1011142320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011142320 is an abundant number, since it is smaller than the sum of its proper divisors (2307797040).

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

1011142320 is a wasteful number, since it uses less digits than its factorization.

1011142320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247862 (or 247856 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1011142320 is about 31798.4641138530. The cubic root of 1011142320 is about 1003.7003968401.

Adding to 1011142320 its reverse (232411101), we get a palindrome (1243553421).

The spelling of 1011142320 in words is "one billion, eleven million, one hundred forty-two thousand, three hundred twenty".