1243032122 has 4 divisors (see below), whose sum is σ = 1864548186. Its totient is φ = 621516060.

The previous prime is 1243032067. The next prime is 1243032143. The reversal of 1243032122 is 2212303421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2212303421 = 2207 ⋅1002403.

It can be written as a sum of positive squares in only one way, i.e., 1186044721 + 56987401 = 34439^2 + 7549^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1243032094 and 1243032103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310758029 + ... + 310758032.

Almost surely, 2^1243032122 is an apocalyptic number.

1243032122 is a deficient number, since it is larger than the sum of its proper divisors (621516064).

1243032122 is an equidigital number, since it uses as much as digits as its factorization.

1243032122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621516063.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1243032122 is about 35256.6606756794. The cubic root of 1243032122 is about 1075.2120359104.

Adding to 1243032122 its reverse (2212303421), we get a palindrome (3455335543).

The spelling of 1243032122 in words is "one billion, two hundred forty-three million, thirty-two thousand, one hundred twenty-two".