1527139129 has 2 divisors, whose sum is σ = 1527139130. Its totient is φ = 1527139128.

The previous prime is 1527139111. The next prime is 1527139139. The reversal of 1527139129 is 9219317251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 928847529 + 598291600 = 30477^2 + 24460^2 .

It is an emirp because it is prime and its reverse (9219317251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1527139129 - 2⁷ = 1527139001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1527139091 and 1527139100.

It is not a weakly prime, because it can be changed into another prime (1527139139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 763569564 + 763569565.

It is an arithmetic number, because the mean of its divisors is an integer number (763569565).

Almost surely, 2^1527139129 is an apocalyptic number.

It is an amenable number.

1527139129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1527139129 is an equidigital number, since it uses as much as digits as its factorization.

1527139129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 1527139129 is about 39078.6275219589. The cubic root of 1527139129 is about 1151.5766977854.

The spelling of 1527139129 in words is "one billion, five hundred twenty-seven million, one hundred thirty-nine thousand, one hundred twenty-nine".