420987007 has 8 divisors (see below), whose sum is σ = 489283200. Its totient is φ = 354729624.

The previous prime is 420986987. The next prime is 420987011. The reversal of 420987007 is 700789024.

It is a happy number.

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-420987007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420987067) 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, 509257 + ... + 510082.

It is an arithmetic number, because the mean of its divisors is an integer number (61160400).

Almost surely, 2^420987007 is an apocalyptic number.

420987007 is a deficient number, since it is larger than the sum of its proper divisors (68296193).

420987007 is a wasteful number, since it uses less digits than its factorization.

420987007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019405.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 420987007 is about 20517.9679062036. The cubic root of 420987007 is about 749.4734122863.

The spelling of 420987007 in words is "four hundred twenty million, nine hundred eighty-seven thousand, seven".