42950129 has 2 divisors, whose sum is σ = 42950130. Its totient is φ = 42950128.

The previous prime is 42950119. The next prime is 42950147. The reversal of 42950129 is 92105924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 14807104 = 5305^2 + 3848^2 .

It is a cyclic number.

It is not a de Polignac number, because 42950129 - 2⁸ = 42949873 is a prime.

It is a super-2 number, since 2×42950129² = 3689427162233282, which contains 22 as substring.

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 = 42950095 and 42950104.

It is not a weakly prime, because it can be changed into another prime (42950119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21475064 + 21475065.

It is an arithmetic number, because the mean of its divisors is an integer number (21475065).

Almost surely, 2^42950129 is an apocalyptic number.

It is an amenable number.

42950129 is a deficient number, since it is larger than the sum of its proper divisors (1).

42950129 is an equidigital number, since it uses as much as digits as its factorization.

42950129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 42950129 is about 6553.6347929985. The cubic root of 42950129 is about 350.2043133614.

The spelling of 42950129 in words is "forty-two million, nine hundred fifty thousand, one hundred twenty-nine".