1140121515 has 64 divisors (see below), whose sum is σ = 2087568000. Its totient is φ = 527192064.

The previous prime is 1140121511. The next prime is 1140121529. The reversal of 1140121515 is 5151210411.

It is not a de Polignac number, because 1140121515 - 2² = 1140121511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1140121491 and 1140121500.

It is not an unprimeable number, because it can be changed into a prime (1140121511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 206511 + ... + 211959.

It is an arithmetic number, because the mean of its divisors is an integer number (32618250).

Almost surely, 2^1140121515 is an apocalyptic number.

1140121515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1140121515 is a deficient number, since it is larger than the sum of its proper divisors (947446485).

1140121515 is a wasteful number, since it uses less digits than its factorization.

1140121515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1140121515 is about 33765.6854661652. The cubic root of 1140121515 is about 1044.6810424354.

Adding to 1140121515 its reverse (5151210411), we get a palindrome (6291331926).

The spelling of 1140121515 in words is "one billion, one hundred forty million, one hundred twenty-one thousand, five hundred fifteen".