1245802226 has 4 divisors (see below), whose sum is σ = 1868703342. Its totient is φ = 622901112.

The previous prime is 1245802223. The next prime is 1245802249. The reversal of 1245802226 is 6222085421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6222085421 = 41 ⋅151758181.

It can be written as a sum of positive squares in only one way, i.e., 976875025 + 268927201 = 31255^2 + 16399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1245802192 and 1245802201.

It is not an unprimeable number, because it can be changed into a prime (1245802223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311450555 + ... + 311450558.

Almost surely, 2^1245802226 is an apocalyptic number.

1245802226 is a deficient number, since it is larger than the sum of its proper divisors (622901116).

1245802226 is an equidigital number, since it uses as much as digits as its factorization.

1245802226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622901115.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 1245802226 is about 35295.9236456563. The cubic root of 1245802226 is about 1076.0101486723.

Adding to 1245802226 its reverse (6222085421), we get a palindrome (7467887647).

The spelling of 1245802226 in words is "one billion, two hundred forty-five million, eight hundred two thousand, two hundred twenty-six".