70121371 has 4 divisors (see below), whose sum is σ = 70815744. Its totient is φ = 69427000.

The previous prime is 70121369. The next prime is 70121377. The reversal of 70121371 is 17312107.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70121371 - 2¹ = 70121369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70121377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347035 + ... + 347236.

It is an arithmetic number, because the mean of its divisors is an integer number (17703936).

Almost surely, 2^70121371 is an apocalyptic number.

70121371 is a deficient number, since it is larger than the sum of its proper divisors (694373).

70121371 is a wasteful number, since it uses less digits than its factorization.

70121371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694372.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 70121371 is about 8373.8504285663. The cubic root of 70121371 is about 412.3665850759.

Adding to 70121371 its reverse (17312107), we get a palindrome (87433478).

The spelling of 70121371 in words is "seventy million, one hundred twenty-one thousand, three hundred seventy-one".