121646142 has 24 divisors (see below), whose sum is σ = 264824040. Its totient is φ = 40355280.

The previous prime is 121646123. The next prime is 121646143. The reversal of 121646142 is 241646121.

121646142 is a `hidden beast` number, since 1 + 2 + 1 + 646 + 14 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121646143) 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, 12217 + ... + 19812.

It is an arithmetic number, because the mean of its divisors is an integer number (11034335).

Almost surely, 2^121646142 is an apocalyptic number.

121646142 is an abundant number, since it is smaller than the sum of its proper divisors (143177898).

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

121646142 is a wasteful number, since it uses less digits than its factorization.

121646142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32248 (or 32245 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 121646142 is about 11029.3309860571. The cubic root of 121646142 is about 495.4875881195.

The spelling of 121646142 in words is "one hundred twenty-one million, six hundred forty-six thousand, one hundred forty-two".