1427205823 has 2 divisors, whose sum is σ = 1427205824. Its totient is φ = 1427205822.

The previous prime is 1427205817. The next prime is 1427205953. The reversal of 1427205823 is 3285027241.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3285027241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1427205823 - 2¹³ = 1427197631 is a prime.

It is a super-2 number, since 2×1427205823² = 4073832922410214658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427205803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713602911 + 713602912.

It is an arithmetic number, because the mean of its divisors is an integer number (713602912).

Almost surely, 2^1427205823 is an apocalyptic number.

1427205823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427205823 is an equidigital number, since it uses as much as digits as its factorization.

1427205823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1427205823 is about 37778.3777179487. The cubic root of 1427205823 is about 1125.8888969436. Note that the first 4 decimals are identical.

The spelling of 1427205823 in words is "one billion, four hundred twenty-seven million, two hundred five thousand, eight hundred twenty-three".