1020111240 has 64 divisors (see below), whose sum is σ = 3066125760. Its totient is φ = 271514880.

The previous prime is 1020111187. The next prime is 1020111263. The reversal of 1020111240 is 421110201.

It is a happy number.

1020111240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 57870 + ... + 73410.

It is an arithmetic number, because the mean of its divisors is an integer number (47908215).

Almost surely, 2^1020111240 is an apocalyptic number.

1020111240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020111240 is an abundant number, since it is smaller than the sum of its proper divisors (2046014520).

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

1020111240 is a wasteful number, since it uses less digits than its factorization.

1020111240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16102 (or 16098 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1020111240 is about 31939.1803276164. The cubic root of 1020111240 is about 1006.6593019261.

Adding to 1020111240 its reverse (421110201), we get a palindrome (1441221441).

The spelling of 1020111240 in words is "one billion, twenty million, one hundred eleven thousand, two hundred forty".