126438 has 16 divisors (see below), whose sum is σ = 272496. Its totient is φ = 38880.

The previous prime is 126433. The next prime is 126443. The reversal of 126438 is 834621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (126433) and next prime (126443).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126433) by changing a digit.

126438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733 + ... + 888.

It is an arithmetic number, because the mean of its divisors is an integer number (17031).

2¹²⁶⁴³⁸ is an apocalyptic number.

126438 is an abundant number, since it is smaller than the sum of its proper divisors (146058).

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

126438 is a wasteful number, since it uses less digits than its factorization.

126438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639.

The product of its digits is 1152, while the sum is 24.

The square root of 126438 is about 355.5812143519. The cubic root of 126438 is about 50.1910027631.

The spelling of 126438 in words is "one hundred twenty-six thousand, four hundred thirty-eight".