1461121727 has 4 divisors (see below), whose sum is σ = 1573515720. Its totient is φ = 1348727736.

The previous prime is 1461121723. The next prime is 1461121741. The reversal of 1461121727 is 7271211641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7271211641 = 571 ⋅12734171.

It is a cyclic number.

It is not a de Polignac number, because 1461121727 - 2² = 1461121723 is a prime.

It is a super-2 number, since 2×1461121727² = 4269753402222925058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1461121693 and 1461121702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461121723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56196977 + ... + 56197002.

It is an arithmetic number, because the mean of its divisors is an integer number (393378930).

Almost surely, 2^1461121727 is an apocalyptic number.

1461121727 is a deficient number, since it is larger than the sum of its proper divisors (112393993).

1461121727 is a wasteful number, since it uses less digits than its factorization.

1461121727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112393992.

The product of its digits is 4704, while the sum is 32.

The square root of 1461121727 is about 38224.6219994391. The cubic root of 1461121727 is about 1134.7376539211.

The spelling of 1461121727 in words is "one billion, four hundred sixty-one million, one hundred twenty-one thousand, seven hundred twenty-seven".