421425670 has 8 divisors (see below), whose sum is σ = 758566224. Its totient is φ = 168570264.

The previous prime is 421425661. The next prime is 421425679. The reversal of 421425670 is 76524124.

It is an interprime number because it is at equal distance from previous prime (421425661) and next prime (421425679).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421425679) 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 3 ways as a sum of consecutive naturals, for example, 21071274 + ... + 21071293.

It is an arithmetic number, because the mean of its divisors is an integer number (94820778).

Almost surely, 2^421425670 is an apocalyptic number.

421425670 is a deficient number, since it is larger than the sum of its proper divisors (337140554).

421425670 is a wasteful number, since it uses less digits than its factorization.

421425670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42142574.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 421425670 is about 20528.6548512074. The cubic root of 421425670 is about 749.7336357817.

Adding to 421425670 its reverse (76524124), we get a palindrome (497949794).

The spelling of 421425670 in words is "four hundred twenty-one million, four hundred twenty-five thousand, six hundred seventy".