121895747 has 8 divisors (see below), whose sum is σ = 125224512. Its totient is φ = 118584000.

The previous prime is 121895737. The next prime is 121895759. The reversal of 121895747 is 747598121.

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

It is a cyclic number.

It is not a de Polignac number, because 121895747 - 2²² = 117701443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121895698 and 121895707.

It is not an unprimeable number, because it can be changed into a prime (121895737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10997 + ... + 19097.

It is an arithmetic number, because the mean of its divisors is an integer number (15653064).

Almost surely, 2^121895747 is an apocalyptic number.

121895747 is a deficient number, since it is larger than the sum of its proper divisors (3328765).

121895747 is an equidigital number, since it uses as much as digits as its factorization.

121895747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509.

The product of its digits is 141120, while the sum is 44.

The square root of 121895747 is about 11040.6406969886. The cubic root of 121895747 is about 495.8262526086.

The spelling of 121895747 in words is "one hundred twenty-one million, eight hundred ninety-five thousand, seven hundred forty-seven".