1405245427 has 4 divisors (see below), whose sum is σ = 1411547200. Its totient is φ = 1398943656.

The previous prime is 1405245403. The next prime is 1405245451. The reversal of 1405245427 is 7245425041.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1405245403) and next prime (1405245451).

It is a cyclic number.

It is not a de Polignac number, because 1405245427 - 2¹¹ = 1405243379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1405245392 and 1405245401.

It is not an unprimeable number, because it can be changed into a prime (1405245487) 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, 3150552 + ... + 3150997.

It is an arithmetic number, because the mean of its divisors is an integer number (352886800).

Almost surely, 2^1405245427 is an apocalyptic number.

1405245427 is a deficient number, since it is larger than the sum of its proper divisors (6301773).

1405245427 is an equidigital number, since it uses as much as digits as its factorization.

1405245427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6301772.

The product of its (nonzero) digits is 44800, while the sum is 34.

The square root of 1405245427 is about 37486.6033003792. The cubic root of 1405245427 is about 1120.0843439351.

The spelling of 1405245427 in words is "one billion, four hundred five million, two hundred forty-five thousand, four hundred twenty-seven".