12542947 has 2 divisors, whose sum is σ = 12542948. Its totient is φ = 12542946.

The previous prime is 12542939. The next prime is 12542951. The reversal of 12542947 is 74924521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12542947 - 2³ = 12542939 is a prime.

It is not a weakly prime, because it can be changed into another prime (12542917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271473 + 6271474.

It is an arithmetic number, because the mean of its divisors is an integer number (6271474).

Almost surely, 2^12542947 is an apocalyptic number.

12542947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12542947 is an equidigital number, since it uses as much as digits as its factorization.

12542947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 12542947 is about 3541.6023209841. The cubic root of 12542947 is about 232.3449276179.

The spelling of 12542947 in words is "twelve million, five hundred forty-two thousand, nine hundred forty-seven".