126408047 has 4 divisors (see below), whose sum is σ = 127106616. Its totient is φ = 125709480.

The previous prime is 126408019. The next prime is 126408059. The reversal of 126408047 is 740804621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740804621 = 137 ⋅5407333.

It is a cyclic number.

It is not a de Polignac number, because 126408047 - 2⁸ = 126407791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126408067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349013 + ... + 349374.

It is an arithmetic number, because the mean of its divisors is an integer number (31776654).

Almost surely, 2^126408047 is an apocalyptic number.

126408047 is a deficient number, since it is larger than the sum of its proper divisors (698569).

126408047 is an equidigital number, since it uses as much as digits as its factorization.

126408047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698568.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 126408047 is about 11243.1333266132. The cubic root of 126408047 is about 501.8703905540.

The spelling of 126408047 in words is "one hundred twenty-six million, four hundred eight thousand, forty-seven".