1245621146 has 16 divisors (see below), whose sum is σ = 2329473600. Its totient is φ = 485306880.

The previous prime is 1245621131. The next prime is 1245621149. The reversal of 1245621146 is 6411265421.

It is not an unprimeable number, because it can be changed into a prime (1245621149) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 4044071 + ... + 4044378.

It is an arithmetic number, because the mean of its divisors is an integer number (145592100).

Almost surely, 2^1245621146 is an apocalyptic number.

1245621146 is a deficient number, since it is larger than the sum of its proper divisors (1083852454).

1245621146 is a wasteful number, since it uses less digits than its factorization.

1245621146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088469.

The product of its digits is 11520, while the sum is 32.

The square root of 1245621146 is about 35293.3583836959. The cubic root of 1245621146 is about 1075.9580126925.

Adding to 1245621146 its reverse (6411265421), we get a palindrome (7656886567).

The spelling of 1245621146 in words is "one billion, two hundred forty-five million, six hundred twenty-one thousand, one hundred forty-six".