1140001020 has 96 divisors (see below), whose sum is σ = 3669019200. Its totient is φ = 293513472.

The previous prime is 1140000997. The next prime is 1140001091. The reversal of 1140001020 is 201000411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1140000993 and 1140001011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20739 + ... + 52058.

It is an arithmetic number, because the mean of its divisors is an integer number (38218950).

Almost surely, 2^1140001020 is an apocalyptic number.

1140001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140001020 is an abundant number, since it is smaller than the sum of its proper divisors (2529018180).

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

1140001020 is a wasteful number, since it uses less digits than its factorization.

1140001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72844 (or 72836 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1140001020 is about 33763.9011371613. The cubic root of 1140001020 is about 1044.6442383827.

Adding to 1140001020 its reverse (201000411), we get a palindrome (1341001431).

The spelling of 1140001020 in words is "one billion, one hundred forty million, one thousand, twenty".