420517782 has 12 divisors (see below), whose sum is σ = 911121900. Its totient is φ = 140172588.

The previous prime is 420517781. The next prime is 420517787. The reversal of 420517782 is 287715024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420517781) 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 5 ways as a sum of consecutive naturals, for example, 11681032 + ... + 11681067.

It is an arithmetic number, because the mean of its divisors is an integer number (75926825).

Almost surely, 2^420517782 is an apocalyptic number.

420517782 is an abundant number, since it is smaller than the sum of its proper divisors (490604118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420517782 is a wasteful number, since it uses less digits than its factorization.

420517782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23362107 (or 23362104 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 420517782 is about 20506.5302281980. The cubic root of 420517782 is about 749.1948586391.

The spelling of 420517782 in words is "four hundred twenty million, five hundred seventeen thousand, seven hundred eighty-two".