142304121 has 20 divisors (see below), whose sum is σ = 214216464. Its totient is φ = 94138200.

The previous prime is 142304119. The next prime is 142304137. The reversal of 142304121 is 121403241.

It is not a de Polignac number, because 142304121 - 2¹ = 142304119 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 142304094 and 142304103.

It is not an unprimeable number, because it can be changed into a prime (142304101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3906 + ... + 17316.

Almost surely, 2^142304121 is an apocalyptic number.

It is an amenable number.

142304121 is a deficient number, since it is larger than the sum of its proper divisors (71912343).

142304121 is a wasteful number, since it uses less digits than its factorization.

142304121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13554 (or 13545 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 142304121 is about 11929.1290964596. The cubic root of 142304121 is about 522.0825275780.

Adding to 142304121 its reverse (121403241), we get a palindrome (263707362).

The spelling of 142304121 in words is "one hundred forty-two million, three hundred four thousand, one hundred twenty-one".