121694406 has 32 divisors (see below), whose sum is σ = 258044928. Its totient is φ = 38193120.

The previous prime is 121694401. The next prime is 121694423. The reversal of 121694406 is 604496121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121694401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1960 + ... + 15723.

It is an arithmetic number, because the mean of its divisors is an integer number (8063904).

Almost surely, 2^121694406 is an apocalyptic number.

121694406 is an abundant number, since it is smaller than the sum of its proper divisors (136350522).

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

121694406 is a wasteful number, since it uses less digits than its factorization.

121694406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17756.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 121694406 is about 11031.5187531001. The cubic root of 121694406 is about 495.5531089012.

The spelling of 121694406 in words is "one hundred twenty-one million, six hundred ninety-four thousand, four hundred six".