1421242544 has 10 divisors (see below), whose sum is σ = 2753657460. Its totient is φ = 710621264.

The previous prime is 1421242531. The next prime is 1421242561. The reversal of 1421242544 is 4452421241.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44413814 + ... + 44413845.

It is an arithmetic number, because the mean of its divisors is an integer number (275365746).

Almost surely, 2^1421242544 is an apocalyptic number.

It is an amenable number.

1421242544 is a deficient number, since it is larger than the sum of its proper divisors (1332414916).

1421242544 is an equidigital number, since it uses as much as digits as its factorization.

1421242544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88827667 (or 88827661 counting only the distinct ones).

The product of its digits is 10240, while the sum is 29.

The square root of 1421242544 is about 37699.3706048258. The cubic root of 1421242544 is about 1124.3186113148.

Adding to 1421242544 its reverse (4452421241), we get a palindrome (5873663785).

The spelling of 1421242544 in words is "one billion, four hundred twenty-one million, two hundred forty-two thousand, five hundred forty-four".