420780007 has 8 divisors (see below), whose sum is σ = 431832240. Its totient is φ = 409765440.

The previous prime is 420780001. The next prime is 420780079. The reversal of 420780007 is 700087024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420780007 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 (420780001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13969 + ... + 32197.

It is an arithmetic number, because the mean of its divisors is an integer number (53979030).

Almost surely, 2^420780007 is an apocalyptic number.

420780007 is a deficient number, since it is larger than the sum of its proper divisors (11052233).

420780007 is a wasteful number, since it uses less digits than its factorization.

420780007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18833.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 420780007 is about 20512.9229267796. The cubic root of 420780007 is about 749.3505530465.

The spelling of 420780007 in words is "four hundred twenty million, seven hundred eighty thousand, seven".