70200421 has 12 divisors (see below), whose sum is σ = 74676000. Its totient is φ = 65980008.

The previous prime is 70200413. The next prime is 70200443. The reversal of 70200421 is 12400207.

It is not a de Polignac number, because 70200421 - 2³ = 70200413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70200395 and 70200404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70200401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49480 + ... + 50878.

It is an arithmetic number, because the mean of its divisors is an integer number (6223000).

Almost surely, 2^70200421 is an apocalyptic number.

It is an amenable number.

70200421 is a deficient number, since it is larger than the sum of its proper divisors (4475579).

70200421 is a wasteful number, since it uses less digits than its factorization.

70200421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 70200421 is about 8378.5691499205. The cubic root of 70200421 is about 412.5214847702.

Adding to 70200421 its reverse (12400207), we get a palindrome (82600628).

The spelling of 70200421 in words is "seventy million, two hundred thousand, four hundred twenty-one".