1421131020544 has 27 divisors (see below), whose sum is σ = 2836748821627. Its totient is φ = 710555973376.

The previous prime is 1421131020523. The next prime is 1421131020581. The reversal of 1421131020544 is 4450201311241.

It is a happy number.

The square root of 1421131020544 is 1192112.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1421131020544² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 19036539 + ... + 19111045.

Almost surely, 2^{1421131020544} is an apocalyptic number.

1421131020544 is the 1192112-nd square number.

It is an amenable number.

1421131020544 is a deficient number, since it is larger than the sum of its proper divisors (1415617801083).

1421131020544 is an frugal number, since it uses more digits than its factorization.

1421131020544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149030 (or 74509 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1421131020544 its reverse (4450201311241), we get a palindrome (5871332331785).

The spelling of 1421131020544 in words is "one trillion, four hundred twenty-one billion, one hundred thirty-one million, twenty thousand, five hundred forty-four".