1291303942 has 16 divisors (see below), whose sum is σ = 1961931312. Its totient is φ = 637378560.

The previous prime is 1291303933. The next prime is 1291303961. The reversal of 1291303942 is 2493031921.

It is a junction number, because it is equal to n+sod(n) for n = 1291303898 and 1291303907.

It is a congruent number.

It is an unprimeable number.

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, 37798 + ... + 63334.

It is an arithmetic number, because the mean of its divisors is an integer number (122620707).

Almost surely, 2^1291303942 is an apocalyptic number.

1291303942 is a deficient number, since it is larger than the sum of its proper divisors (670627370).

1291303942 is a wasteful number, since it uses less digits than its factorization.

1291303942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25863.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1291303942 is about 35934.7177809984. The cubic root of 1291303942 is about 1088.9538940776.

The spelling of 1291303942 in words is "one billion, two hundred ninety-one million, three hundred three thousand, nine hundred forty-two".