1455412121 has 4 divisors (see below), whose sum is σ = 1469822244. Its totient is φ = 1441002000.

The previous prime is 1455412111. The next prime is 1455412139. The reversal of 1455412121 is 1212145541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1321686025 + 133726096 = 36355^2 + 11564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1455412121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1455412111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7204910 + ... + 7205111.

It is an arithmetic number, because the mean of its divisors is an integer number (367455561).

Almost surely, 2^1455412121 is an apocalyptic number.

It is an amenable number.

1455412121 is a deficient number, since it is larger than the sum of its proper divisors (14410123).

1455412121 is a wasteful number, since it uses less digits than its factorization.

1455412121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14410122.

The product of its digits is 1600, while the sum is 26.

The square root of 1455412121 is about 38149.8639709239. The cubic root of 1455412121 is about 1133.2576580286.

Adding to 1455412121 its reverse (1212145541), we get a palindrome (2667557662).

The spelling of 1455412121 in words is "one billion, four hundred fifty-five million, four hundred twelve thousand, one hundred twenty-one".