1421727139044 has 243 divisors, whose sum is σ = 3814969838043. Its totient is φ = 446420332800.

The previous prime is 1421727139013. The next prime is 1421727139073. The reversal of 1421727139044 is 4409317271241.

The square root of 1421727139044 is 1192362.

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

1421727139044 is a `hidden beast` number, since 1 + 4 + 217 + 2 + 7 + 1 + 390 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16819496100 + 1404907642944 = 129690^2 + 1185288^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 10852878859 + ... + 10852878989.

Almost surely, 2^{1421727139044} is an apocalyptic number.

1421727139044 is the 1192362-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421727139044

1421727139044 is an abundant number, since it is smaller than the sum of its proper divisors (2393242698999).

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

1421727139044 is a wasteful number, since it uses less digits than its factorization.

1421727139044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 1421727139044 in words is "one trillion, four hundred twenty-one billion, seven hundred twenty-seven million, one hundred thirty-nine thousand, forty-four".