70330421 has 4 divisors (see below), whose sum is σ = 80377632. Its totient is φ = 60283212.

The previous prime is 70330391. The next prime is 70330427. The reversal of 70330421 is 12403307.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70330421 - 2²⁶ = 3221557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70330393 and 70330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70330427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5023595 + ... + 5023608.

It is an arithmetic number, because the mean of its divisors is an integer number (20094408).

Almost surely, 2^70330421 is an apocalyptic number.

It is an amenable number.

70330421 is a deficient number, since it is larger than the sum of its proper divisors (10047211).

70330421 is a wasteful number, since it uses less digits than its factorization.

70330421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10047210.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 70330421 is about 8386.3234495218. The cubic root of 70330421 is about 412.7759691113.

Adding to 70330421 its reverse (12403307), we get a palindrome (82733728).

The spelling of 70330421 in words is "seventy million, three hundred thirty thousand, four hundred twenty-one".