1140521200 has 120 divisors (see below), whose sum is σ = 3372541088. Its totient is φ = 360944640.

The previous prime is 1140521197. The next prime is 1140521203. The reversal of 1140521200 is 21250411.

It is an interprime number because it is at equal distance from previous prime (1140521197) and next prime (1140521203).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140521203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20734 + ... + 52066.

Almost surely, 2^1140521200 is an apocalyptic number.

1140521200 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 1140521200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686270544).

1140521200 is an abundant number, since it is smaller than the sum of its proper divisors (2232019888).

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

1140521200 is a wasteful number, since it uses less digits than its factorization.

1140521200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31371 (or 31360 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1140521200 is about 33771.6034561583. The cubic root of 1140521200 is about 1044.8031038574.

Adding to 1140521200 its reverse (21250411), we get a palindrome (1161771611).

The spelling of 1140521200 in words is "one billion, one hundred forty million, five hundred twenty-one thousand, two hundred".