142123106 has 4 divisors (see below), whose sum is σ = 213184662. Its totient is φ = 71061552.

The previous prime is 142123103. The next prime is 142123109. The reversal of 142123106 is 601321241.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (142123103) and next prime (142123109).

It can be written as a sum of positive squares in only one way, i.e., 114297481 + 27825625 = 10691^2 + 5275^2 .

It is not an unprimeable number, because it can be changed into a prime (142123103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35530775 + ... + 35530778.

Almost surely, 2^142123106 is an apocalyptic number.

142123106 is a deficient number, since it is larger than the sum of its proper divisors (71061556).

142123106 is an equidigital number, since it uses as much as digits as its factorization.

142123106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71061555.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 142123106 is about 11921.5395817822. The cubic root of 142123106 is about 521.8610655727.

Adding to 142123106 its reverse (601321241), we get a palindrome (743444347).

The spelling of 142123106 in words is "one hundred forty-two million, one hundred twenty-three thousand, one hundred six".