1200012541 has 32 divisors (see below), whose sum is σ = 1569915648. Its totient is φ = 890127360.

The previous prime is 1200012533. The next prime is 1200012551. The reversal of 1200012541 is 1452100021.

It is a cyclic number.

It is not a de Polignac number, because 1200012541 - 2³ = 1200012533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200012551) 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 31 ways as a sum of consecutive naturals, for example, 436431 + ... + 439171.

It is an arithmetic number, because the mean of its divisors is an integer number (49059864).

Almost surely, 2^1200012541 is an apocalyptic number.

It is an amenable number.

1200012541 is a deficient number, since it is larger than the sum of its proper divisors (369903107).

1200012541 is a wasteful number, since it uses less digits than its factorization.

1200012541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1200012541 is about 34641.1971646478. The cubic root of 1200012541 is about 1062.6622710589.

Adding to 1200012541 its reverse (1452100021), we get a palindrome (2652112562).

The spelling of 1200012541 in words is "one billion, two hundred million, twelve thousand, five hundred forty-one".