121424617 has 2 divisors, whose sum is σ = 121424618. Its totient is φ = 121424616.

The previous prime is 121424603. The next prime is 121424651. The reversal of 121424617 is 716424121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121352256 + 72361 = 11016^2 + 269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121424617 is a prime.

It is a super-2 number, since 2×121424617² = 29487875227193378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121422617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60712308 + 60712309.

It is an arithmetic number, because the mean of its divisors is an integer number (60712309).

Almost surely, 2^121424617 is an apocalyptic number.

It is an amenable number.

121424617 is a deficient number, since it is larger than the sum of its proper divisors (1).

121424617 is an equidigital number, since it uses as much as digits as its factorization.

121424617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 28.

The square root of 121424617 is about 11019.2838696532. The cubic root of 121424617 is about 495.1866343807.

Adding to 121424617 its reverse (716424121), we get a palindrome (837848738).

The spelling of 121424617 in words is "one hundred twenty-one million, four hundred twenty-four thousand, six hundred seventeen".