142241121 has 12 divisors (see below), whose sum is σ = 224137680. Its totient is φ = 86206680.

The previous prime is 142241117. The next prime is 142241147. The reversal of 142241121 is 121142241.

142241121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142241121 - 2² = 142241117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 142241094 and 142241103.

It is not an unprimeable number, because it can be changed into a prime (142241111) 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, 718291 + ... + 718488.

It is an arithmetic number, because the mean of its divisors is an integer number (18678140).

Almost surely, 2^142241121 is an apocalyptic number.

142241121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142241121 is a deficient number, since it is larger than the sum of its proper divisors (81896559).

142241121 is a wasteful number, since it uses less digits than its factorization.

142241121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436796 (or 1436793 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 142241121 is about 11926.4882090245. The cubic root of 142241121 is about 522.0054718236.

Adding to 142241121 its reverse (121142241), we get a palindrome (263383362).

The spelling of 142241121 in words is "one hundred forty-two million, two hundred forty-one thousand, one hundred twenty-one".