2124421440 has 56 divisors (see below), whose sum is σ = 6745041120. Its totient is φ = 566512128.

The previous prime is 2124421417. The next prime is 2124421451. The reversal of 2124421440 is 441244212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2124421440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105510 + ... + 1107429.

Almost surely, 2^2124421440 is an apocalyptic number.

2124421440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2124421440 is an abundant number, since it is smaller than the sum of its proper divisors (4620619680).

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

2124421440 is a wasteful number, since it uses less digits than its factorization.

2124421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212959 (or 2212949 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 2124421440 is about 46091.4464949843. The cubic root of 2124421440 is about 1285.5241070383.

Adding to 2124421440 its reverse (441244212), we get a palindrome (2565665652).

The spelling of 2124421440 in words is "two billion, one hundred twenty-four million, four hundred twenty-one thousand, four hundred forty".