1424443540 has 36 divisors (see below), whose sum is σ = 3239141724. Its totient is φ = 525947136.

The previous prime is 1424443511. The next prime is 1424443541. The reversal of 1424443540 is 453444241.

It can be written as a sum of positive squares in 6 ways, for example, as 403768836 + 1020674704 = 20094^2 + 31948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424443541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207337 + ... + 214096.

It is an arithmetic number, because the mean of its divisors is an integer number (89976159).

Almost surely, 2^1424443540 is an apocalyptic number.

1424443540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1424443540 is an abundant number, since it is smaller than the sum of its proper divisors (1814698184).

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

1424443540 is a wasteful number, since it uses less digits than its factorization.

1424443540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421468 (or 421453 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 1424443540 is about 37741.8009639180. The cubic root of 1424443540 is about 1125.1620612623.

Adding to 1424443540 its reverse (453444241), we get a palindrome (1877887781).

The spelling of 1424443540 in words is "one billion, four hundred twenty-four million, four hundred forty-three thousand, five hundred forty".