1200473249 has 4 divisors (see below), whose sum is σ = 1200557460. Its totient is φ = 1200389040.

The previous prime is 1200473227. The next prime is 1200473279. The reversal of 1200473249 is 9423740021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9423740021 = 23 ⋅409727827.

It can be written as a sum of positive squares in 2 ways, for example, as 522808225 + 677665024 = 22865^2 + 26032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200473249 - 2⁸ = 1200472993 is a prime.

It is a super-2 number, since 2×1200473249² = 2882272043129232002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200473279) 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, 14834 + ... + 51195.

It is an arithmetic number, because the mean of its divisors is an integer number (300139365).

Almost surely, 2^1200473249 is an apocalyptic number.

It is an amenable number.

1200473249 is a deficient number, since it is larger than the sum of its proper divisors (84211).

1200473249 is an equidigital number, since it uses as much as digits as its factorization.

1200473249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84210.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1200473249 is about 34647.8462389800. The cubic root of 1200473249 is about 1062.7982458518.

The spelling of 1200473249 in words is "one billion, two hundred million, four hundred seventy-three thousand, two hundred forty-nine".