1245390 has 16 divisors (see below), whose sum is σ = 2989008. Its totient is φ = 332096.

The previous prime is 1245379. The next prime is 1245397. The reversal of 1245390 is 935421.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1245390.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 20727 + ... + 20786.

It is an arithmetic number, because the mean of its divisors is an integer number (186813).

2^1245390 is an apocalyptic number.

1245390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1245390 is an abundant number, since it is smaller than the sum of its proper divisors (1743618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245390 is a wasteful number, since it uses less digits than its factorization.

1245390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41523.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1245390 is about 1115.9704297158. The cubic root of 1245390 is about 107.5891454527.

The spelling of 1245390 in words is "one million, two hundred forty-five thousand, three hundred ninety".