121946403 has 8 divisors (see below), whose sum is σ = 162664528. Its totient is φ = 81262944.

The previous prime is 121946399. The next prime is 121946411. The reversal of 121946403 is 304649121.

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

It is not a de Polignac number, because 121946403 - 2² = 121946399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121941403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125 + ... + 15657.

It is an arithmetic number, because the mean of its divisors is an integer number (20333066).

Almost surely, 2^121946403 is an apocalyptic number.

121946403 is a deficient number, since it is larger than the sum of its proper divisors (40718125).

121946403 is a wasteful number, since it uses less digits than its factorization.

121946403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17333.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 121946403 is about 11042.9345284666. The cubic root of 121946403 is about 495.8949263096.

The spelling of 121946403 in words is "one hundred twenty-one million, nine hundred forty-six thousand, four hundred three".