1246994642 has 16 divisors (see below), whose sum is σ = 1981778400. Its totient is φ = 586448448.

The previous prime is 1246994641. The next prime is 1246994713. The reversal of 1246994642 is 2464996421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1246994641) 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 in 7 ways as a sum of consecutive naturals, for example, 46973 + ... + 68559.

It is an arithmetic number, because the mean of its divisors is an integer number (123861150).

Almost surely, 2^1246994642 is an apocalyptic number.

1246994642 is a deficient number, since it is larger than the sum of its proper divisors (734783758).

1246994642 is a wasteful number, since it uses less digits than its factorization.

1246994642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23305.

The product of its digits is 746496, while the sum is 47.

The square root of 1246994642 is about 35312.8113012827. The cubic root of 1246994642 is about 1076.3533392022.

The spelling of 1246994642 in words is "one billion, two hundred forty-six million, nine hundred ninety-four thousand, six hundred forty-two".