1245427 has 8 divisors (see below), whose sum is σ = 1311264. Its totient is φ = 1180608.

The previous prime is 1245421. The next prime is 1245449. The reversal of 1245427 is 7245421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245427 - 2¹⁹ = 721139 is a prime.

It is a Duffinian number.

1245427 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1245421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3823 + ... + 4135.

It is an arithmetic number, because the mean of its divisors is an integer number (163908).

2^1245427 is an apocalyptic number.

1245427 is a deficient number, since it is larger than the sum of its proper divisors (65837).

1245427 is a wasteful number, since it uses less digits than its factorization.

1245427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509.

The product of its digits is 2240, while the sum is 25.

The square root of 1245427 is about 1115.9870070928. The cubic root of 1245427 is about 107.5902109178.

The spelling of 1245427 in words is "one million, two hundred forty-five thousand, four hundred twenty-seven".