5402139247 has 2 divisors, whose sum is σ = 5402139248. Its totient is φ = 5402139246.

The previous prime is 5402139221. The next prime is 5402139257. The reversal of 5402139247 is 7429312045.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5402139247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5402139257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2701069623 + 2701069624.

It is an arithmetic number, because the mean of its divisors is an integer number (2701069624).

Almost surely, 2^5402139247 is an apocalyptic number.

5402139247 is a deficient number, since it is larger than the sum of its proper divisors (1).

5402139247 is an equidigital number, since it uses as much as digits as its factorization.

5402139247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 5402139247 is about 73499.2465743697. The cubic root of 5402139247 is about 1754.6422862738.

The spelling of 5402139247 in words is "five billion, four hundred two million, one hundred thirty-nine thousand, two hundred forty-seven".