121026747 has 8 divisors (see below), whose sum is σ = 162397456. Its totient is φ = 80170272.

The previous prime is 121026743. The next prime is 121026779. The reversal of 121026747 is 747620121.

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

It is not a de Polignac number, because 121026747 - 2² = 121026743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121026743) by changing a digit.

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, 128008 + ... + 128949.

It is an arithmetic number, because the mean of its divisors is an integer number (20299682).

Almost surely, 2^121026747 is an apocalyptic number.

121026747 is a deficient number, since it is larger than the sum of its proper divisors (41370709).

121026747 is a wasteful number, since it uses less digits than its factorization.

121026747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257117.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 121026747 is about 11001.2157055482. The cubic root of 121026747 is about 494.6451859927.

Adding to 121026747 its reverse (747620121), we get a palindrome (868646868).

The spelling of 121026747 in words is "one hundred twenty-one million, twenty-six thousand, seven hundred forty-seven".