1245147 has 8 divisors (see below), whose sum is σ = 1675344. Its totient is φ = 822528.

The previous prime is 1245137. The next prime is 1245149. The reversal of 1245147 is 7415421.

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

It is not a de Polignac number, because 1245147 - 2⁷ = 1245019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1245149) 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, 1498 + ... + 2175.

It is an arithmetic number, because the mean of its divisors is an integer number (209418).

2^1245147 is an apocalyptic number.

1245147 is a deficient number, since it is larger than the sum of its proper divisors (430197).

1245147 is a wasteful number, since it uses less digits than its factorization.

1245147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789.

The product of its digits is 1120, while the sum is 24.

The square root of 1245147 is about 1115.8615505519. The cubic root of 1245147 is about 107.5821474138.

The spelling of 1245147 in words is "one million, two hundred forty-five thousand, one hundred forty-seven".