121265142 has 16 divisors (see below), whose sum is σ = 242656752. Its totient is φ = 40400640.

The previous prime is 121265141. The next prime is 121265143. The reversal of 121265142 is 241562121.

It is an interprime number because it is at equal distance from previous prime (121265141) and next prime (121265143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121265141) 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, 11118 + ... + 19134.

It is an arithmetic number, because the mean of its divisors is an integer number (15166047).

Almost surely, 2^121265142 is an apocalyptic number.

121265142 is an abundant number, since it is smaller than the sum of its proper divisors (121391610).

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

121265142 is a wasteful number, since it uses less digits than its factorization.

121265142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10543.

The product of its digits is 960, while the sum is 24.

The square root of 121265142 is about 11012.0453141095. The cubic root of 121265142 is about 494.9697522584.

The spelling of 121265142 in words is "one hundred twenty-one million, two hundred sixty-five thousand, one hundred forty-two".