1245122 has 4 divisors (see below), whose sum is σ = 1867686. Its totient is φ = 622560.

The previous prime is 1245121. The next prime is 1245137. The reversal of 1245122 is 2215421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 808201 + 436921 = 899^2 + 661^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1245122.

It is not an unprimeable number, because it can be changed into a prime (1245121) by changing a digit.

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, 311279 + ... + 311282.

2^1245122 is an apocalyptic number.

1245122 is a deficient number, since it is larger than the sum of its proper divisors (622564).

1245122 is an equidigital number, since it uses as much as digits as its factorization.

1245122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622563.

The product of its digits is 160, while the sum is 17.

The square root of 1245122 is about 1115.8503483891. The cubic root of 1245122 is about 107.5814273993.

Subtracting 1245122 from its reverse (2215421), we obtain a cube (970299 = 99³).

The spelling of 1245122 in words is "one million, two hundred forty-five thousand, one hundred twenty-two".