126438042 has 8 divisors (see below), whose sum is σ = 252876096. Its totient is φ = 42146012.

The previous prime is 126438041. The next prime is 126438043. The reversal of 126438042 is 240834621.

It is an interprime number because it is at equal distance from previous prime (126438041) and next prime (126438043).

It is a sphenic number, since it is the product of 3 distinct primes.

126438042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (126438041) 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 in 3 ways as a sum of consecutive naturals, for example, 10536498 + ... + 10536509.

It is an arithmetic number, because the mean of its divisors is an integer number (31609512).

Almost surely, 2^126438042 is an apocalyptic number.

126438042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126438042 is a wasteful number, since it uses less digits than its factorization.

126438042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21073012.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 126438042 is about 11244.4671727921. The cubic root of 126438042 is about 501.9100832059.

The spelling of 126438042 in words is "one hundred twenty-six million, four hundred thirty-eight thousand, forty-two".