1200454253 has 4 divisors (see below), whose sum is σ = 1203894300. Its totient is φ = 1197014208.

The previous prime is 1200454243. The next prime is 1200454271. The reversal of 1200454253 is 3524540021.

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 797328169 + 403126084 = 28237^2 + 20078^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200454253 - 2¹⁰ = 1200453229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200454223) 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, 1719500 + ... + 1720197.

It is an arithmetic number, because the mean of its divisors is an integer number (300973575).

Almost surely, 2^1200454253 is an apocalyptic number.

It is an amenable number.

1200454253 is a deficient number, since it is larger than the sum of its proper divisors (3440047).

1200454253 is an equidigital number, since it uses as much as digits as its factorization.

1200454253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440046.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1200454253 is about 34647.5721083022. The cubic root of 1200454253 is about 1062.7926400010.

Adding to 1200454253 its reverse (3524540021), we get a palindrome (4724994274).

The spelling of 1200454253 in words is "one billion, two hundred million, four hundred fifty-four thousand, two hundred fifty-three".