1455200121 has 16 divisors (see below), whose sum is σ = 2003060864. Its totient is φ = 939009024.

The previous prime is 1455200083. The next prime is 1455200129. The reversal of 1455200121 is 1210025541.

It is not a de Polignac number, because 1455200121 - 2²² = 1451005817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1455200129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12541 + ... + 55386.

It is an arithmetic number, because the mean of its divisors is an integer number (125191304).

Almost surely, 2^1455200121 is an apocalyptic number.

It is an amenable number.

1455200121 is a deficient number, since it is larger than the sum of its proper divisors (547860743).

1455200121 is a wasteful number, since it uses less digits than its factorization.

1455200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68160.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1455200121 is about 38147.0853539297. The cubic root of 1455200121 is about 1133.2026307077.

Adding to 1455200121 its reverse (1210025541), we get a palindrome (2665225662).

The spelling of 1455200121 in words is "one billion, four hundred fifty-five million, two hundred thousand, one hundred twenty-one".