1154421315 has 48 divisors (see below), whose sum is σ = 2079368928. Its totient is φ = 614428416.

The previous prime is 1154421293. The next prime is 1154421337. The reversal of 1154421315 is 5131244511.

It is an interprime number because it is at equal distance from previous prime (1154421293) and next prime (1154421337).

It is not a de Polignac number, because 1154421315 - 2⁵ = 1154421283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1157397 + ... + 1158393.

It is an arithmetic number, because the mean of its divisors is an integer number (43320186).

Almost surely, 2^1154421315 is an apocalyptic number.

1154421315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1154421315 is a deficient number, since it is larger than the sum of its proper divisors (924947613).

1154421315 is an frugal number, since it uses more digits than its factorization.

1154421315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1958 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1154421315 is about 33976.7761125154. The cubic root of 1154421315 is about 1049.0304928457.

Adding to 1154421315 its reverse (5131244511), we get a palindrome (6285665826).

The spelling of 1154421315 in words is "one billion, one hundred fifty-four million, four hundred twenty-one thousand, three hundred fifteen".