47021129 has 2 divisors, whose sum is σ = 47021130. Its totient is φ = 47021128.

The previous prime is 47021101. The next prime is 47021147. The reversal of 47021129 is 92112074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46895104 + 126025 = 6848^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 47021129 - 2⁸ = 47020873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47021098 and 47021107.

It is not a weakly prime, because it can be changed into another prime (47021159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23510564 + 23510565.

It is an arithmetic number, because the mean of its divisors is an integer number (23510565).

Almost surely, 2^47021129 is an apocalyptic number.

It is an amenable number.

47021129 is a deficient number, since it is larger than the sum of its proper divisors (1).

47021129 is an equidigital number, since it uses as much as digits as its factorization.

47021129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 47021129 is about 6857.1954179533. The cubic root of 47021129 is about 360.9366785549.

The spelling of 47021129 in words is "forty-seven million, twenty-one thousand, one hundred twenty-nine".