130742042 has 4 divisors (see below), whose sum is σ = 196113066. Its totient is φ = 65371020.

The previous prime is 130742033. The next prime is 130742047. The reversal of 130742042 is 240247031.

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., 129299641 + 1442401 = 11371^2 + 1201^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130741999 and 130742017.

It is not an unprimeable number, because it can be changed into a prime (130742047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32685509 + ... + 32685512.

Almost surely, 2^130742042 is an apocalyptic number.

130742042 is a deficient number, since it is larger than the sum of its proper divisors (65371024).

130742042 is an equidigital number, since it uses as much as digits as its factorization.

130742042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65371023.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 130742042 is about 11434.2486416905. The cubic root of 130742042 is about 507.5417287147.

Adding to 130742042 its reverse (240247031), we get a palindrome (370989073).

The spelling of 130742042 in words is "one hundred thirty million, seven hundred forty-two thousand, forty-two".