121451142 has 16 divisors (see below), whose sum is σ = 244261440. Its totient is φ = 40257192.

The previous prime is 121451107. The next prime is 121451147. The reversal of 121451142 is 241154121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121451147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55468 + ... + 57615.

It is an arithmetic number, because the mean of its divisors is an integer number (15266340).

Almost surely, 2^121451142 is an apocalyptic number.

121451142 is an abundant number, since it is smaller than the sum of its proper divisors (122810298).

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

121451142 is a wasteful number, since it uses less digits than its factorization.

121451142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113267.

The product of its digits is 320, while the sum is 21.

The square root of 121451142 is about 11020.4873757924. The cubic root of 121451142 is about 495.2226893134. Note that the first 3 decimals are identical.

The spelling of 121451142 in words is "one hundred twenty-one million, four hundred fifty-one thousand, one hundred forty-two".