424920540 has 144 divisors (see below), whose sum is σ = 1322407296. Its totient is φ = 101861760.

The previous prime is 424920533. The next prime is 424920547. The reversal of 424920540 is 45029424.

It is an interprime number because it is at equal distance from previous prime (424920533) and next prime (424920547).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 424920498 and 424920507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424920547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 776547 + ... + 777093.

It is an arithmetic number, because the mean of its divisors is an integer number (9183384).

Almost surely, 2^424920540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424920540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661203648).

424920540 is an abundant number, since it is smaller than the sum of its proper divisors (897486756).

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

424920540 is a wasteful number, since it uses less digits than its factorization.

424920540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 424920540 is about 20613.6008499243. The cubic root of 424920540 is about 751.8004388790.

Adding to 424920540 its reverse (45029424), we get a palindrome (469949964).

The spelling of 424920540 in words is "four hundred twenty-four million, nine hundred twenty thousand, five hundred forty".