142250121 has 32 divisors (see below), whose sum is σ = 230832000. Its totient is φ = 86042304.

The previous prime is 142250083. The next prime is 142250137. The reversal of 142250121 is 121052241.

142250121 is a `hidden beast` number, since 142 + 2 + 501 + 21 = 666.

It is not a de Polignac number, because 142250121 - 2⁶ = 142250057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142250094 and 142250103.

It is not an unprimeable number, because it can be changed into a prime (142250161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17275 + ... + 24143.

It is an arithmetic number, because the mean of its divisors is an integer number (7213500).

Almost surely, 2^142250121 is an apocalyptic number.

It is an amenable number.

142250121 is a deficient number, since it is larger than the sum of its proper divisors (88581879).

142250121 is a wasteful number, since it uses less digits than its factorization.

142250121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6950 (or 6944 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 142250121 is about 11926.8655144594. The cubic root of 142250121 is about 522.0164811813.

The spelling of 142250121 in words is "one hundred forty-two million, two hundred fifty thousand, one hundred twenty-one".