1211052434 has 4 divisors (see below), whose sum is σ = 1816578654. Its totient is φ = 605526216.

The previous prime is 1211052433. The next prime is 1211052449. The reversal of 1211052434 is 4342501121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4342501121 = 7 ⋅620357303.

It can be written as a sum of positive squares in only one way, i.e., 1196952409 + 14100025 = 34597^2 + 3755^2 .

It is not an unprimeable number, because it can be changed into a prime (1211052433) 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 as a sum of consecutive naturals, namely, 302763107 + ... + 302763110.

Almost surely, 2^1211052434 is an apocalyptic number.

1211052434 is a deficient number, since it is larger than the sum of its proper divisors (605526220).

1211052434 is an equidigital number, since it uses as much as digits as its factorization.

1211052434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605526219.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1211052434 is about 34800.1786489667. The cubic root of 1211052434 is about 1065.9110938012.

Adding to 1211052434 its reverse (4342501121), we get a palindrome (5553553555).

The spelling of 1211052434 in words is "one billion, two hundred eleven million, fifty-two thousand, four hundred thirty-four".