424255440 has 80 divisors (see below), whose sum is σ = 1503082368. Its totient is φ = 96972288.

The previous prime is 424255439. The next prime is 424255441. The reversal of 424255440 is 44552424.

It is an interprime number because it is at equal distance from previous prime (424255439) and next prime (424255441).

It is a tau number, because it is divible by the number of its divisors (80).

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 = 424255398 and 424255407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424255441) 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, 124587 + ... + 127946.

Almost surely, 2^424255440 is an apocalyptic number.

424255440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424255440 is an abundant number, since it is smaller than the sum of its proper divisors (1078826928).

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

424255440 is a wasteful number, since it uses less digits than its factorization.

424255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252556 (or 252550 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 424255440 is about 20597.4619795741. The cubic root of 424255440 is about 751.4079862234.

The spelling of 424255440 in words is "four hundred twenty-four million, two hundred fifty-five thousand, four hundred forty".