121545142 has 8 divisors (see below), whose sum is σ = 183272832. Its totient is φ = 60454200.

The previous prime is 121545139. The next prime is 121545157. The reversal of 121545142 is 241545121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158709 + ... + 159472.

It is an arithmetic number, because the mean of its divisors is an integer number (22909104).

Almost surely, 2^121545142 is an apocalyptic number.

121545142 is a deficient number, since it is larger than the sum of its proper divisors (61727690).

121545142 is a wasteful number, since it uses less digits than its factorization.

121545142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318374.

The product of its digits is 1600, while the sum is 25.

The square root of 121545142 is about 11024.7513350642. The cubic root of 121545142 is about 495.3504194921.

The spelling of 121545142 in words is "one hundred twenty-one million, five hundred forty-five thousand, one hundred forty-two".