1421224004 has 24 divisors (see below), whose sum is σ = 2747945088. Its totient is φ = 639731840.

The previous prime is 1421223977. The next prime is 1421224039. The reversal of 1421224004 is 4004221241.

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, 452792 + ... + 455919.

It is an arithmetic number, because the mean of its divisors is an integer number (114497712).

Almost surely, 2^1421224004 is an apocalyptic number.

It is an amenable number.

1421224004 is a deficient number, since it is larger than the sum of its proper divisors (1326721084).

1421224004 is a wasteful number, since it uses less digits than its factorization.

1421224004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908755 (or 908753 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1421224004 is about 37699.1247113245. The cubic root of 1421224004 is about 1124.3137224102.

Adding to 1421224004 its reverse (4004221241), we get a palindrome (5425445245).

The spelling of 1421224004 in words is "one billion, four hundred twenty-one million, two hundred twenty-four thousand, four".