103142042 has 4 divisors (see below), whose sum is σ = 154713066. Its totient is φ = 51571020.

The previous prime is 103142041. The next prime is 103142057. The reversal of 103142042 is 240241301.

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

It can be written as a sum of positive squares in only one way, i.e., 60357361 + 42784681 = 7769^2 + 6541^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 103142042.

It is not an unprimeable number, because it can be changed into a prime (103142041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25785509 + ... + 25785512.

Almost surely, 2^103142042 is an apocalyptic number.

103142042 is a deficient number, since it is larger than the sum of its proper divisors (51571024).

103142042 is an equidigital number, since it uses as much as digits as its factorization.

103142042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51571023.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 103142042 is about 10155.8870612074. The cubic root of 103142042 is about 468.9701943376.

Adding to 103142042 its reverse (240241301), we get a palindrome (343383343).

The spelling of 103142042 in words is "one hundred three million, one hundred forty-two thousand, forty-two".