126859431 has 8 divisors (see below), whose sum is σ = 169207920. Its totient is φ = 84541952.

The previous prime is 126859429. The next prime is 126859451. The reversal of 126859431 is 134958621.

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

It is a cyclic number.

It is not a de Polignac number, because 126859431 - 2¹ = 126859429 is a prime.

It is a super-2 number, since 2×126859431² = 32186630467287522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126859431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126859451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4615 + ... + 16583.

It is an arithmetic number, because the mean of its divisors is an integer number (21150990).

Almost surely, 2^126859431 is an apocalyptic number.

126859431 is a deficient number, since it is larger than the sum of its proper divisors (42348489).

126859431 is a wasteful number, since it uses less digits than its factorization.

126859431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15505.

The product of its digits is 51840, while the sum is 39.

The square root of 126859431 is about 11263.1892019978. The cubic root of 126859431 is about 502.4670486548.

The spelling of 126859431 in words is "one hundred twenty-six million, eight hundred fifty-nine thousand, four hundred thirty-one".