121457017 has 12 divisors (see below), whose sum is σ = 138109860. Its totient is φ = 106604960.

The previous prime is 121457009. The next prime is 121457053. The reversal of 121457017 is 710754121.

It can be written as a sum of positive squares in 2 ways, for example, as 54479161 + 66977856 = 7381^2 + 8184^2 .

It is not a de Polignac number, because 121457017 - 2³ = 121457009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121457057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13798 + ... + 20815.

It is an arithmetic number, because the mean of its divisors is an integer number (11509155).

Almost surely, 2^121457017 is an apocalyptic number.

It is an amenable number.

121457017 is a deficient number, since it is larger than the sum of its proper divisors (16652843).

121457017 is a wasteful number, since it uses less digits than its factorization.

121457017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34664 (or 34653 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 121457017 is about 11020.7539215790. The cubic root of 121457017 is about 495.2306743800.

The spelling of 121457017 in words is "one hundred twenty-one million, four hundred fifty-seven thousand, seventeen".