121603194 has 40 divisors (see below), whose sum is σ = 278296128. Its totient is φ = 39669480.

The previous prime is 121603187. The next prime is 121603259. The reversal of 121603194 is 491306121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 372 + ... + 15599.

Almost surely, 2^121603194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121603194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139148064).

121603194 is an abundant number, since it is smaller than the sum of its proper divisors (156692934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121603194 is a wasteful number, since it uses less digits than its factorization.

121603194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16032 (or 16023 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 121603194 is about 11027.3838239176. The cubic root of 121603194 is about 495.4292694984.

The spelling of 121603194 in words is "one hundred twenty-one million, six hundred three thousand, one hundred ninety-four".