121825158 has 128 divisors (see below), whose sum is σ = 319334400. Its totient is φ = 30108672.

The previous prime is 121825129. The next prime is 121825177. The reversal of 121825158 is 851528121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1117608 + ... + 1117716.

It is an arithmetic number, because the mean of its divisors is an integer number (2494800).

Almost surely, 2^121825158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121825158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159667200).

121825158 is an abundant number, since it is smaller than the sum of its proper divisors (197509242).

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

121825158 is a wasteful number, since it uses less digits than its factorization.

121825158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its digits is 6400, while the sum is 33.

The square root of 121825158 is about 11037.4434539888. The cubic root of 121825158 is about 495.7305242548.

The spelling of 121825158 in words is "one hundred twenty-one million, eight hundred twenty-five thousand, one hundred fifty-eight".