1140020 has 48 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 367104.

The previous prime is 1139993. The next prime is 1140091. The reversal of 1140020 is 200411.

Together with 1763019 it forms a betrothed pair.

It is a congruent number.

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, 2141 + ... + 2619.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2^1140020 is an apocalyptic number.

1140020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451520).

1140020 is an abundant number, since it is smaller than the sum of its proper divisors (1763020).

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

1140020 is a wasteful number, since it uses less digits than its factorization.

1140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 510 counting only the distinct ones).

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

The square root of 1140020 is about 1067.7171910202. The cubic root of 1140020 is about 104.4650035815.

Adding to 1140020 its reverse (200411), we get a palindrome (1340431).

The spelling of 1140020 in words is "one million, one hundred forty thousand, twenty".