126400539 has 8 divisors (see below), whose sum is σ = 168653632. Its totient is φ = 84207240.

The previous prime is 126400523. The next prime is 126400541. The reversal of 126400539 is 935004621.

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

It is not a de Polignac number, because 126400539 - 2⁴ = 126400523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126400579) 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 7 ways as a sum of consecutive naturals, for example, 9757 + ... + 18654.

It is an arithmetic number, because the mean of its divisors is an integer number (21081704).

Almost surely, 2^126400539 is an apocalyptic number.

126400539 is a deficient number, since it is larger than the sum of its proper divisors (42253093).

126400539 is a wasteful number, since it uses less digits than its factorization.

126400539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29897.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 126400539 is about 11242.7994289679. The cubic root of 126400539 is about 501.8604541678.

The spelling of 126400539 in words is "one hundred twenty-six million, four hundred thousand, five hundred thirty-nine".