75047429 has 2 divisors, whose sum is σ = 75047430. Its totient is φ = 75047428.

The previous prime is 75047419. The next prime is 75047443. The reversal of 75047429 is 92474057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68442529 + 6604900 = 8273^2 + 2570^2 .

It is a cyclic number.

It is not a de Polignac number, because 75047429 - 2⁸ = 75047173 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 75047392 and 75047401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75047419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37523714 + 37523715.

It is an arithmetic number, because the mean of its divisors is an integer number (37523715).

Almost surely, 2^75047429 is an apocalyptic number.

It is an amenable number.

75047429 is a deficient number, since it is larger than the sum of its proper divisors (1).

75047429 is an equidigital number, since it uses as much as digits as its factorization.

75047429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 75047429 is about 8662.9919196545. The cubic root of 75047429 is about 421.8052098472.

The spelling of 75047429 in words is "seventy-five million, forty-seven thousand, four hundred twenty-nine".