121316782 has 16 divisors (see below), whose sum is σ = 184250880. Its totient is φ = 59903712.

The previous prime is 121316779. The next prime is 121316801. The reversal of 121316782 is 287613121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82768 + ... + 84220.

It is an arithmetic number, because the mean of its divisors is an integer number (11515680).

Almost surely, 2^121316782 is an apocalyptic number.

121316782 is a deficient number, since it is larger than the sum of its proper divisors (62934098).

121316782 is a wasteful number, since it uses less digits than its factorization.

121316782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947.

The product of its digits is 4032, while the sum is 31.

The square root of 121316782 is about 11014.3897697512. The cubic root of 121316782 is about 495.0400022089.

The spelling of 121316782 in words is "one hundred twenty-one million, three hundred sixteen thousand, seven hundred eighty-two".