1231002242 has 4 divisors (see below), whose sum is σ = 1846503366. Its totient is φ = 615501120.

The previous prime is 1231002211. The next prime is 1231002263. The reversal of 1231002242 is 2422001321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2422001321 = 47 ⋅51531943.

It can be written as a sum of positive squares in only one way, i.e., 1081160161 + 149842081 = 32881^2 + 12241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1231002242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307750559 + ... + 307750562.

Almost surely, 2^1231002242 is an apocalyptic number.

1231002242 is a deficient number, since it is larger than the sum of its proper divisors (615501124).

1231002242 is an equidigital number, since it uses as much as digits as its factorization.

1231002242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615501123.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1231002242 is about 35085.6415361042. The cubic root of 1231002242 is about 1071.7322051667.

Adding to 1231002242 its reverse (2422001321), we get a palindrome (3653003563).

The spelling of 1231002242 in words is "one billion, two hundred thirty-one million, two thousand, two hundred forty-two".