1245917042 has 8 divisors (see below), whose sum is σ = 1900551600. Its totient is φ = 612399844.

The previous prime is 1245917041. The next prime is 1245917047. The reversal of 1245917042 is 2407195421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1245916993 and 1245917011.

It is not an unprimeable number, because it can be changed into a prime (1245917041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5279192 + ... + 5279427.

It is an arithmetic number, because the mean of its divisors is an integer number (237568950).

Almost surely, 2^1245917042 is an apocalyptic number.

1245917042 is a deficient number, since it is larger than the sum of its proper divisors (654634558).

1245917042 is a wasteful number, since it uses less digits than its factorization.

1245917042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10558680.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1245917042 is about 35297.5500849563. The cubic root of 1245917042 is about 1076.0432035140.

The spelling of 1245917042 in words is "one billion, two hundred forty-five million, nine hundred seventeen thousand, forty-two".