137428507 has 2 divisors, whose sum is σ = 137428508. Its totient is φ = 137428506.

The previous prime is 137428483. The next prime is 137428513. The reversal of 137428507 is 705824731.

137428507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137428507 - 2²³ = 129039899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137428567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68714253 + 68714254.

It is an arithmetic number, because the mean of its divisors is an integer number (68714254).

Almost surely, 2^137428507 is an apocalyptic number.

137428507 is a deficient number, since it is larger than the sum of its proper divisors (1).

137428507 is an equidigital number, since it uses as much as digits as its factorization.

137428507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 137428507 is about 11722.9905314301. The cubic root of 137428507 is about 516.0505867017.

The spelling of 137428507 in words is "one hundred thirty-seven million, four hundred twenty-eight thousand, five hundred seven".