420042260 has 24 divisors (see below), whose sum is σ = 962279136. Its totient is φ = 152742560.

The previous prime is 420042257. The next prime is 420042263. The reversal of 420042260 is 62240024.

It is an interprime number because it is at equal distance from previous prime (420042257) and next prime (420042263).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420042263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954422 + ... + 954861.

It is an arithmetic number, because the mean of its divisors is an integer number (40094964).

Almost surely, 2^420042260 is an apocalyptic number.

It is an amenable number.

420042260 is an abundant number, since it is smaller than the sum of its proper divisors (542236876).

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

420042260 is a wasteful number, since it uses less digits than its factorization.

420042260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909303 (or 1909301 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 420042260 is about 20494.9325444120. The cubic root of 420042260 is about 748.9123553197.

Adding to 420042260 its reverse (62240024), we get a palindrome (482282284).

The spelling of 420042260 in words is "four hundred twenty million, forty-two thousand, two hundred sixty".