70421185 has 4 divisors (see below), whose sum is σ = 84505428. Its totient is φ = 56336944.

The previous prime is 70421179. The next prime is 70421209. The reversal of 70421185 is 58112407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58112407 = 359 ⋅161873.

It can be written as a sum of positive squares in 2 ways, for example, as 7568001 + 62853184 = 2751^2 + 7928^2 .

It is a cyclic number.

It is not a de Polignac number, because 70421185 - 2³ = 70421177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7042114 + ... + 7042123.

It is an arithmetic number, because the mean of its divisors is an integer number (21126357).

Almost surely, 2^70421185 is an apocalyptic number.

It is an amenable number.

70421185 is a deficient number, since it is larger than the sum of its proper divisors (14084243).

70421185 is a wasteful number, since it uses less digits than its factorization.

70421185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14084242.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 70421185 is about 8391.7331344604. The cubic root of 70421185 is about 412.9534603132.

The spelling of 70421185 in words is "seventy million, four hundred twenty-one thousand, one hundred eighty-five".