121403207 has 8 divisors (see below), whose sum is σ = 122304000. Its totient is φ = 120506040.

The previous prime is 121403201. The next prime is 121403221. The reversal of 121403207 is 702304121.

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 121403207 - 2¹² = 121399111 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 (121403201) 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, 110732 + ... + 111822.

It is an arithmetic number, because the mean of its divisors is an integer number (15288000).

Almost surely, 2^121403207 is an apocalyptic number.

121403207 is a deficient number, since it is larger than the sum of its proper divisors (900793).

121403207 is a wasteful number, since it uses less digits than its factorization.

121403207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 121403207 is about 11018.3123480867. The cubic root of 121403207 is about 495.1575283414.

Adding to 121403207 its reverse (702304121), we get a palindrome (823707328).

The spelling of 121403207 in words is "one hundred twenty-one million, four hundred three thousand, two hundred seven".