70129429 has 2 divisors, whose sum is σ = 70129430. Its totient is φ = 70129428.

The previous prime is 70129417. The next prime is 70129447. The reversal of 70129429 is 92492107.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35343025 + 34786404 = 5945^2 + 5898^2 .

It is a cyclic number.

It is not a de Polignac number, because 70129429 - 2¹³ = 70121237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70129394 and 70129403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70129459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35064714 + 35064715.

It is an arithmetic number, because the mean of its divisors is an integer number (35064715).

Almost surely, 2^70129429 is an apocalyptic number.

It is an amenable number.

70129429 is a deficient number, since it is larger than the sum of its proper divisors (1).

70129429 is an equidigital number, since it uses as much as digits as its factorization.

70129429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 70129429 is about 8374.3315554138. The cubic root of 70129429 is about 412.3823801781.

The spelling of 70129429 in words is "seventy million, one hundred twenty-nine thousand, four hundred twenty-nine".