1154021140 has 12 divisors (see below), whose sum is σ = 2423444436. Its totient is φ = 461608448.

The previous prime is 1154021131. The next prime is 1154021161. The reversal of 1154021140 is 411204511.

It can be written as a sum of positive squares in 2 ways, for example, as 258695056 + 895326084 = 16084^2 + 29922^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28850509 + ... + 28850548.

It is an arithmetic number, because the mean of its divisors is an integer number (201953703).

Almost surely, 2^1154021140 is an apocalyptic number.

1154021140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154021140 is an abundant number, since it is smaller than the sum of its proper divisors (1269423296).

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

1154021140 is a wasteful number, since it uses less digits than its factorization.

1154021140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57701066 (or 57701064 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1154021140 is about 33970.8866531329. The cubic root of 1154021140 is about 1048.9092649231.

Adding to 1154021140 its reverse (411204511), we get a palindrome (1565225651).

The spelling of 1154021140 in words is "one billion, one hundred fifty-four million, twenty-one thousand, one hundred forty".