126010042 has 4 divisors (see below), whose sum is σ = 189015066. Its totient is φ = 63005020.

The previous prime is 126010039. The next prime is 126010043. The reversal of 126010042 is 240010621.

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., 73462041 + 52548001 = 8571^2 + 7249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 126009998 and 126010025.

It is not an unprimeable number, because it can be changed into a prime (126010043) 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, 31502509 + ... + 31502512.

Almost surely, 2^126010042 is an apocalyptic number.

126010042 is a deficient number, since it is larger than the sum of its proper divisors (63005024).

126010042 is an equidigital number, since it uses as much as digits as its factorization.

126010042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63005023.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 126010042 is about 11225.4194576417. The cubic root of 126010042 is about 501.3431115389.

Adding to 126010042 its reverse (240010621), we get a palindrome (366020663).

The spelling of 126010042 in words is "one hundred twenty-six million, ten thousand, forty-two".