1252309946 has 4 divisors (see below), whose sum is σ = 1878464922. Its totient is φ = 626154972.

The previous prime is 1252309937. The next prime is 1252309951. The reversal of 1252309946 is 6499032521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6499032521 = 353 ⋅18410857.

It can be written as a sum of positive squares in only one way, i.e., 1065304321 + 187005625 = 32639^2 + 13675^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313077485 + ... + 313077488.

Almost surely, 2^1252309946 is an apocalyptic number.

1252309946 is a deficient number, since it is larger than the sum of its proper divisors (626154976).

1252309946 is an equidigital number, since it uses as much as digits as its factorization.

1252309946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626154975.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 1252309946 is about 35387.9915508072. The cubic root of 1252309946 is about 1077.8804870702.

The spelling of 1252309946 in words is "one billion, two hundred fifty-two million, three hundred nine thousand, nine hundred forty-six".