1421424400 has 240 divisors, whose sum is σ = 4078453248. Its totient is φ = 470016000.

The previous prime is 1421424373. The next prime is 1421424413. The reversal of 1421424400 is 44241241.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2318494 + ... + 2319106.

Almost surely, 2^1421424400 is an apocalyptic number.

1421424400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421424400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039226624).

1421424400 is an abundant number, since it is smaller than the sum of its proper divisors (2657028848).

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

1421424400 is a wasteful number, since it uses less digits than its factorization.

1421424400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1421424400 is about 37701.7824512317. The cubic root of 1421424400 is about 1124.3665635723.

Adding to 1421424400 its reverse (44241241), we get a palindrome (1465665641).

The spelling of 1421424400 in words is "one billion, four hundred twenty-one million, four hundred twenty-four thousand, four hundred".