1145612420 has 24 divisors (see below), whose sum is σ = 2414009304. Its totient is φ = 456678656.

The previous prime is 1145612399. The next prime is 1145612521. The reversal of 1145612420 is 242165411.

It can be written as a sum of positive squares in 4 ways, for example, as 162664516 + 982947904 = 12754^2 + 31352^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1145612420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91889 + ... + 103608.

It is an arithmetic number, because the mean of its divisors is an integer number (100583721).

Almost surely, 2^1145612420 is an apocalyptic number.

1145612420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145612420 is an abundant number, since it is smaller than the sum of its proper divisors (1268396884).

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

1145612420 is a wasteful number, since it uses less digits than its factorization.

1145612420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195799 (or 195797 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1145612420 is about 33846.8967558327. The cubic root of 1145612420 is about 1046.3554429637.

Adding to 1145612420 its reverse (242165411), we get a palindrome (1387777831).

The spelling of 1145612420 in words is "one billion, one hundred forty-five million, six hundred twelve thousand, four hundred twenty".