12902242 has 4 divisors (see below), whose sum is σ = 19353366. Its totient is φ = 6451120.

The previous prime is 12902237. The next prime is 12902251. The reversal of 12902242 is 24220921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24220921 = 193 ⋅125497.

It can be written as a sum of positive squares in only one way, i.e., 12467961 + 434281 = 3531^2 + 659^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 3225559 + ... + 3225562.

Almost surely, 2^12902242 is an apocalyptic number.

12902242 is a deficient number, since it is larger than the sum of its proper divisors (6451124).

12902242 is an equidigital number, since it uses as much as digits as its factorization.

12902242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6451123.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 12902242 is about 3591.9690978626. The cubic root of 12902242 is about 234.5425960267.

The spelling of 12902242 in words is "twelve million, nine hundred two thousand, two hundred forty-two".