1727407421 has 2 divisors, whose sum is σ = 1727407422. Its totient is φ = 1727407420.

The previous prime is 1727407399. The next prime is 1727407427. The reversal of 1727407421 is 1247047271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1088076196 + 639331225 = 32986^2 + 25285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1727407421 - 2²² = 1723213117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1727407427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 863703710 + 863703711.

It is an arithmetic number, because the mean of its divisors is an integer number (863703711).

Almost surely, 2^1727407421 is an apocalyptic number.

It is an amenable number.

1727407421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1727407421 is an equidigital number, since it uses as much as digits as its factorization.

1727407421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 1727407421 is about 41562.0911528763. The cubic root of 1727407421 is about 1199.8628132523.

The spelling of 1727407421 in words is "one billion, seven hundred twenty-seven million, four hundred seven thousand, four hundred twenty-one".