1245678 has 48 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 335664.

The previous prime is 1245649. The next prime is 1245683. The reversal of 1245678 is 8765421.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5475 + ... + 5697.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2^1245678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532160).

1245678 is an abundant number, since it is smaller than the sum of its proper divisors (1818642).

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

1245678 is a wasteful number, since it uses less digits than its factorization.

1245678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 254 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 1245678 is about 1116.0994579337. The cubic root of 1245678 is about 107.5974382460.

The spelling of 1245678 in words is "one million, two hundred forty-five thousand, six hundred seventy-eight".