1200534541 has 4 divisors (see below), whose sum is σ = 1201342300. Its totient is φ = 1199726784.

The previous prime is 1200534539. The next prime is 1200534557. The reversal of 1200534541 is 1454350021.

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 244797316 + 955737225 = 15646^2 + 30915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200534541 - 2¹ = 1200534539 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 (1200535541) 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, 401646 + ... + 404623.

It is an arithmetic number, because the mean of its divisors is an integer number (300335575).

Almost surely, 2^1200534541 is an apocalyptic number.

It is an amenable number.

1200534541 is a deficient number, since it is larger than the sum of its proper divisors (807759).

1200534541 is an equidigital number, since it uses as much as digits as its factorization.

1200534541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807758.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1200534541 is about 34648.7307271132. The cubic root of 1200534541 is about 1062.8163331413.

Adding to 1200534541 its reverse (1454350021), we get a palindrome (2654884562).

The spelling of 1200534541 in words is "one billion, two hundred million, five hundred thirty-four thousand, five hundred forty-one".