70017129 has 120 divisors (see below), whose sum is σ = 139043520. Its totient is φ = 34727616.

The previous prime is 70017113. The next prime is 70017137. The reversal of 70017129 is 92171007.

It is not a de Polignac number, because 70017129 - 2⁴ = 70017113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70017179) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1186702 + ... + 1186760.

It is an arithmetic number, because the mean of its divisors is an integer number (1158696).

Almost surely, 2^70017129 is an apocalyptic number.

It is an amenable number.

70017129 is a deficient number, since it is larger than the sum of its proper divisors (69026391).

70017129 is a wasteful number, since it uses less digits than its factorization.

70017129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 70017129 is about 8367.6238562689. The cubic root of 70017129 is about 412.1621431897.

The spelling of 70017129 in words is "seventy million, seventeen thousand, one hundred twenty-nine".