142120234 has 4 divisors (see below), whose sum is σ = 213180354. Its totient is φ = 71060116.

The previous prime is 142120217. The next prime is 142120241. The reversal of 142120234 is 432021241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432021241 = 5009 ⋅86249.

It can be written as a sum of positive squares in only one way, i.e., 133980625 + 8139609 = 11575^2 + 2853^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35530057 + ... + 35530060.

Almost surely, 2^142120234 is an apocalyptic number.

142120234 is a deficient number, since it is larger than the sum of its proper divisors (71060120).

142120234 is an equidigital number, since it uses as much as digits as its factorization.

142120234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71060119.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142120234 is about 11921.4191269328. The cubic root of 142120234 is about 521.8575503219.

Adding to 142120234 its reverse (432021241), we get a palindrome (574141475).

The spelling of 142120234 in words is "one hundred forty-two million, one hundred twenty thousand, two hundred thirty-four".