424020240 has 120 divisors (see below), whose sum is σ = 1627449408. Its totient is φ = 96917760.

The previous prime is 424020209. The next prime is 424020241. The reversal of 424020240 is 42020424.

424020240 is a `hidden beast` number, since 424 + 0 + 2 + 0 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is not an unprimeable number, because it can be changed into a prime (424020241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37026 + ... + 47105.

Almost surely, 2^424020240 is an apocalyptic number.

424020240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424020240 is an abundant number, since it is smaller than the sum of its proper divisors (1203429168).

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

424020240 is a wasteful number, since it uses less digits than its factorization.

424020240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84157 (or 84148 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 424020240 is about 20591.7517467553. The cubic root of 424020240 is about 751.2691046200.

Adding to 424020240 its reverse (42020424), we get a palindrome (466040664).

The spelling of 424020240 in words is "four hundred twenty-four million, twenty thousand, two hundred forty".