142038121 has 8 divisors (see below), whose sum is σ = 143389064. Its totient is φ = 140693760.

The previous prime is 142038119. The next prime is 142038131. The reversal of 142038121 is 121830241.

It is a happy number.

142038121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4562496 + 137475625 = 2136^2 + 11725^2 .

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 142038121 - 2¹ = 142038119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142038092 and 142038101.

It is not an unprimeable number, because it can be changed into a prime (142038101) 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, 48721 + ... + 51553.

It is an arithmetic number, because the mean of its divisors is an integer number (17923633).

Almost surely, 2^142038121 is an apocalyptic number.

It is an amenable number.

142038121 is a deficient number, since it is larger than the sum of its proper divisors (1350943).

142038121 is a wasteful number, since it uses less digits than its factorization.

142038121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 142038121 is about 11917.9747021044. The cubic root of 142038121 is about 521.7570261783.

Adding to 142038121 its reverse (121830241), we get a palindrome (263868362).

The spelling of 142038121 in words is "one hundred forty-two million, thirty-eight thousand, one hundred twenty-one".