126038642 has 4 divisors (see below), whose sum is σ = 189057966. Its totient is φ = 63019320.

The previous prime is 126038641. The next prime is 126038657. The reversal of 126038642 is 246830621.

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., 124523281 + 1515361 = 11159^2 + 1231^2 .

It is a junction number, because it is equal to n+sod(n) for n = 126038599 and 126038608.

It is not an unprimeable number, because it can be changed into a prime (126038641) 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, 31509659 + ... + 31509662.

Almost surely, 2^126038642 is an apocalyptic number.

126038642 is a deficient number, since it is larger than the sum of its proper divisors (63019324).

126038642 is an equidigital number, since it uses as much as digits as its factorization.

126038642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63019323.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 126038642 is about 11226.6932798576. The cubic root of 126038642 is about 501.3810379563.

The spelling of 126038642 in words is "one hundred twenty-six million, thirty-eight thousand, six hundred forty-two".