1212025043 has 16 divisors (see below), whose sum is σ = 1329825600. Its totient is φ = 1100964480.

The previous prime is 1212025039. The next prime is 1212025079. The reversal of 1212025043 is 3405202121.

It is a cyclic number.

It is not a de Polignac number, because 1212025043 - 2² = 1212025039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212025033) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25793 + ... + 55581.

It is an arithmetic number, because the mean of its divisors is an integer number (83114100).

Almost surely, 2^1212025043 is an apocalyptic number.

1212025043 is a deficient number, since it is larger than the sum of its proper divisors (117800557).

1212025043 is a wasteful number, since it uses less digits than its factorization.

1212025043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29902.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1212025043 is about 34814.1500398904. The cubic root of 1212025043 is about 1066.1963655988.

Adding to 1212025043 its reverse (3405202121), we get a palindrome (4617227164).

The spelling of 1212025043 in words is "one billion, two hundred twelve million, twenty-five thousand, forty-three".