421322007 has 4 divisors (see below), whose sum is σ = 561762680. Its totient is φ = 280881336.

The previous prime is 421322003. The next prime is 421322021. The reversal of 421322007 is 700223124.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 421322007 - 2² = 421322003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421322003) 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, 70220332 + ... + 70220337.

It is an arithmetic number, because the mean of its divisors is an integer number (140440670).

Almost surely, 2^421322007 is an apocalyptic number.

421322007 is a deficient number, since it is larger than the sum of its proper divisors (140440673).

421322007 is a wasteful number, since it uses less digits than its factorization.

421322007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140440672.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 421322007 is about 20526.1298592794. The cubic root of 421322007 is about 749.6721571574.

The spelling of 421322007 in words is "four hundred twenty-one million, three hundred twenty-two thousand, seven".