424213240 has 64 divisors (see below), whose sum is σ = 1102520160. Its totient is φ = 145182720.

The previous prime is 424213213. The next prime is 424213243. The reversal of 424213240 is 42312424.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424213243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20877 + ... + 35836.

Almost surely, 2^424213240 is an apocalyptic number.

424213240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424213240 is an abundant number, since it is smaller than the sum of its proper divisors (678306920).

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

424213240 is a wasteful number, since it uses less digits than its factorization.

424213240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56752 (or 56748 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 424213240 is about 20596.4375560435. The cubic root of 424213240 is about 751.3830716198.

Adding to 424213240 its reverse (42312424), we get a palindrome (466525664).

The spelling of 424213240 in words is "four hundred twenty-four million, two hundred thirteen thousand, two hundred forty".