121825906 has 32 divisors (see below), whose sum is σ = 192362688. Its totient is φ = 57819840.

The previous prime is 121825901. The next prime is 121825909. The reversal of 121825906 is 609528121.

It is not an unprimeable number, because it can be changed into a prime (121825901) 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, 536565 + ... + 536791.

It is an arithmetic number, because the mean of its divisors is an integer number (6011334).

Almost surely, 2^121825906 is an apocalyptic number.

121825906 is a deficient number, since it is larger than the sum of its proper divisors (70536782).

121825906 is a wasteful number, since it uses less digits than its factorization.

121825906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 121825906 is about 11037.4773385951. The cubic root of 121825906 is about 495.7315388391.

The spelling of 121825906 in words is "one hundred twenty-one million, eight hundred twenty-five thousand, nine hundred six".