70026421 has 8 divisors (see below), whose sum is σ = 73497600. Its totient is φ = 66590832.

The previous prime is 70026391. The next prime is 70026449. The reversal of 70026421 is 12462007.

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 70026421 - 2⁵ = 70026389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70026392 and 70026401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70026461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4821 + ... + 12778.

It is an arithmetic number, because the mean of its divisors is an integer number (9187200).

Almost surely, 2^70026421 is an apocalyptic number.

It is an amenable number.

70026421 is a deficient number, since it is larger than the sum of its proper divisors (3471179).

70026421 is a wasteful number, since it uses less digits than its factorization.

70026421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17795.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 70026421 is about 8368.1790731317. The cubic root of 70026421 is about 412.1803751152.

Adding to 70026421 its reverse (12462007), we get a palindrome (82488428).

The spelling of 70026421 in words is "seventy million, twenty-six thousand, four hundred twenty-one".