70000121 has 8 divisors (see below), whose sum is σ = 71724744. Its totient is φ = 68290560.

The previous prime is 70000111. The next prime is 70000141. The reversal of 70000121 is 12100007.

It can be written as a sum of positive squares in 4 ways, for example, as 511225 + 69488896 = 715^2 + 8336^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70000121 - 2⁶ = 70000057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70000111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5945 + ... + 13241.

It is an arithmetic number, because the mean of its divisors is an integer number (8965593).

Almost surely, 2^70000121 is an apocalyptic number.

It is an amenable number.

70000121 is a deficient number, since it is larger than the sum of its proper divisors (1724623).

70000121 is a wasteful number, since it uses less digits than its factorization.

70000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7531.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 70000121 is about 8366.6074964707. The cubic root of 70000121 is about 412.1287674453.

Adding to 70000121 its reverse (12100007), we get a palindrome (82100128).

The spelling of 70000121 in words is "seventy million, one hundred twenty-one", and thus it is an aban number.