1245387 has 16 divisors (see below), whose sum is σ = 1951488. Its totient is φ = 696480.

The previous prime is 1245379. The next prime is 1245397. The reversal of 1245387 is 7835421.

It is not a de Polignac number, because 1245387 - 2³ = 1245379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1245397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023 + ... + 1880.

It is an arithmetic number, because the mean of its divisors is an integer number (121968).

2^1245387 is an apocalyptic number.

1245387 is a deficient number, since it is larger than the sum of its proper divisors (706101).

1245387 is a wasteful number, since it uses less digits than its factorization.

1245387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930.

The product of its digits is 6720, while the sum is 30.

The square root of 1245387 is about 1115.9690855933. The cubic root of 1245387 is about 107.5890590627.

It can be divided in two parts, 12 and 45387, that multiplied together give a square (544644 = 738²).

The spelling of 1245387 in words is "one million, two hundred forty-five thousand, three hundred eighty-seven".