121315706 has 8 divisors (see below), whose sum is σ = 192677940. Its totient is φ = 57089728.

The previous prime is 121315697. The next prime is 121315709. The reversal of 121315706 is 607513121.

It can be written as a sum of positive squares in 2 ways, for example, as 95863681 + 25452025 = 9791^2 + 5045^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121315709) 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, 1784021 + ... + 1784088.

Almost surely, 2^121315706 is an apocalyptic number.

121315706 is a deficient number, since it is larger than the sum of its proper divisors (71362234).

121315706 is a wasteful number, since it uses less digits than its factorization.

121315706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568128.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 121315706 is about 11014.3409244494. The cubic root of 121315706 is about 495.0385386449.

Adding to 121315706 its reverse (607513121), we get a palindrome (728828827).

The spelling of 121315706 in words is "one hundred twenty-one million, three hundred fifteen thousand, seven hundred six".