121945134 has 24 divisors (see below), whose sum is σ = 252023400. Its totient is φ = 39335280.

The previous prime is 121945123. The next prime is 121945139. The reversal of 121945134 is 431549121.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121945139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4809 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (10500975).

Almost surely, 2^121945134 is an apocalyptic number.

121945134 is an abundant number, since it is smaller than the sum of its proper divisors (130078266).

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

121945134 is a wasteful number, since it uses less digits than its factorization.

121945134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21216 (or 21185 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 121945134 is about 11042.8770707638. The cubic root of 121945134 is about 495.8932061745.

The spelling of 121945134 in words is "one hundred twenty-one million, nine hundred forty-five thousand, one hundred thirty-four".