1200097405 has 64 divisors (see below), whose sum is σ = 1706443200. Its totient is φ = 802013184.

The previous prime is 1200097387. The next prime is 1200097411. The reversal of 1200097405 is 5047900021.

It is a happy number.

It can be written as a sum of positive squares in 32 ways, for example, as 352763524 + 847333881 = 18782^2 + 29109^2 .

It is not a de Polignac number, because 1200097405 - 2¹³ = 1200089213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6091767 + ... + 6091963.

It is an arithmetic number, because the mean of its divisors is an integer number (26663175).

Almost surely, 2^1200097405 is an apocalyptic number.

It is an amenable number.

1200097405 is a deficient number, since it is larger than the sum of its proper divisors (506345795).

1200097405 is a wasteful number, since it uses less digits than its factorization.

1200097405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1200097405 is about 34642.4220429230. The cubic root of 1200097405 is about 1062.6873206986.

Adding to 1200097405 its reverse (5047900021), we get a palindrome (6247997426).

The spelling of 1200097405 in words is "one billion, two hundred million, ninety-seven thousand, four hundred five".