126540347 has 2 divisors, whose sum is σ = 126540348. Its totient is φ = 126540346.

The previous prime is 126540343. The next prime is 126540371. The reversal of 126540347 is 743045621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126540347 - 2² = 126540343 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126540343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63270173 + 63270174.

It is an arithmetic number, because the mean of its divisors is an integer number (63270174).

Almost surely, 2^126540347 is an apocalyptic number.

126540347 is a deficient number, since it is larger than the sum of its proper divisors (1).

126540347 is an equidigital number, since it uses as much as digits as its factorization.

126540347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 126540347 is about 11249.0153791343. The cubic root of 126540347 is about 502.0454171276.

Adding to 126540347 its reverse (743045621), we get a palindrome (869585968).

The spelling of 126540347 in words is "one hundred twenty-six million, five hundred forty thousand, three hundred forty-seven".