1145612421 has 6 divisors (see below), whose sum is σ = 1654773510. Its totient is φ = 763741608.

The previous prime is 1145612399. The next prime is 1145612521. The reversal of 1145612421 is 1242165411.

1145612421 is a `hidden beast` number, since 1 + 1 + 4 + 5 + 612 + 42 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1136431521 + 9180900 = 33711^2 + 3030^2 .

It is not a de Polignac number, because 1145612421 - 2¹⁷ = 1145481349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145612521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63645126 + ... + 63645143.

It is an arithmetic number, because the mean of its divisors is an integer number (275795585).

Almost surely, 2^1145612421 is an apocalyptic number.

It is an amenable number.

1145612421 is a deficient number, since it is larger than the sum of its proper divisors (509161089).

1145612421 is a wasteful number, since it uses less digits than its factorization.

1145612421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127290275 (or 127290272 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1145612421 is about 33846.8967706051. The cubic root of 1145612421 is about 1046.3554432682.

Adding to 1145612421 its reverse (1242165411), we get a palindrome (2387777832).

The spelling of 1145612421 in words is "one billion, one hundred forty-five million, six hundred twelve thousand, four hundred twenty-one".