1245423106 has 4 divisors (see below), whose sum is σ = 1868134662. Its totient is φ = 622711552.

The previous prime is 1245423089. The next prime is 1245423107. The reversal of 1245423106 is 6013245421.

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., 884765025 + 360658081 = 29745^2 + 18991^2 .

It is not an unprimeable number, because it can be changed into a prime (1245423107) 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, 311355775 + ... + 311355778.

Almost surely, 2^1245423106 is an apocalyptic number.

1245423106 is a deficient number, since it is larger than the sum of its proper divisors (622711556).

1245423106 is an equidigital number, since it uses as much as digits as its factorization.

1245423106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622711555.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1245423106 is about 35290.5526451485. The cubic root of 1245423106 is about 1075.9009878582.

Adding to 1245423106 its reverse (6013245421), we get a palindrome (7258668527).

The spelling of 1245423106 in words is "one billion, two hundred forty-five million, four hundred twenty-three thousand, one hundred six".