142011121 has 8 divisors (see below), whose sum is σ = 163374464. Its totient is φ = 120916800.

The previous prime is 142011113. The next prime is 142011127. The reversal of 142011121 is 121110241.

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

It is a cyclic number.

It is not a de Polignac number, because 142011121 - 2³ = 142011113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142011127) 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, 66120 + ... + 68233.

It is an arithmetic number, because the mean of its divisors is an integer number (20421808).

Almost surely, 2^142011121 is an apocalyptic number.

It is an amenable number.

142011121 is a deficient number, since it is larger than the sum of its proper divisors (21363343).

142011121 is a wasteful number, since it uses less digits than its factorization.

142011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134511.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 142011121 is about 11916.8419054714. The cubic root of 142011121 is about 521.7239638513.

Adding to 142011121 its reverse (121110241), we get a palindrome (263121362).

The spelling of 142011121 in words is "one hundred forty-two million, eleven thousand, one hundred twenty-one".