137428747 has 2 divisors, whose sum is σ = 137428748. Its totient is φ = 137428746.

The previous prime is 137428741. The next prime is 137428763. The reversal of 137428747 is 747824731.

137428747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (747824731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137428747 is a prime.

It is not a weakly prime, because it can be changed into another prime (137428741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68714373 + 68714374.

It is an arithmetic number, because the mean of its divisors is an integer number (68714374).

Almost surely, 2^137428747 is an apocalyptic number.

137428747 is a deficient number, since it is larger than the sum of its proper divisors (1).

137428747 is an equidigital number, since it uses as much as digits as its factorization.

137428747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 43.

The square root of 137428747 is about 11723.0007677215. Note that the first 3 decimals coincide. The cubic root of 137428747 is about 516.0508871053.

The spelling of 137428747 in words is "one hundred thirty-seven million, four hundred twenty-eight thousand, seven hundred forty-seven".