126478939 has 2 divisors, whose sum is σ = 126478940. Its totient is φ = 126478938.

The previous prime is 126478873. The next prime is 126478993. The reversal of 126478939 is 939874621.

Together with next prime (126478993) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126478939 - 2¹⁵ = 126446171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126478892 and 126478901.

It is not a weakly prime, because it can be changed into another prime (126478039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63239469 + 63239470.

It is an arithmetic number, because the mean of its divisors is an integer number (63239470).

Almost surely, 2^126478939 is an apocalyptic number.

126478939 is a deficient number, since it is larger than the sum of its proper divisors (1).

126478939 is an equidigital number, since it uses as much as digits as its factorization.

126478939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 126478939 is about 11246.2855645764. The cubic root of 126478939 is about 501.9641924587.

The spelling of 126478939 in words is "one hundred twenty-six million, four hundred seventy-eight thousand, nine hundred thirty-nine".