1295640 has 96 divisors (see below), whose sum is σ = 4352400. Its totient is φ = 334080.

The previous prime is 1295639. The next prime is 1295647. The reversal of 1295640 is 465921.

1295640 is a `hidden beast` number, since 12 + 9 + 5 + 640 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1295647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21210 + ... + 21270.

2^1295640 is an apocalyptic number.

1295640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1295640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176200).

1295640 is an abundant number, since it is smaller than the sum of its proper divisors (3056760).

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

1295640 is a wasteful number, since it uses less digits than its factorization.

1295640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1295640 is about 1138.2618327960. The cubic root of 1295640 is about 109.0171395206.

It can be divided in two parts, 12956 and 40, that added together give a square (12996 = 114²).

The spelling of 1295640 in words is "one million, two hundred ninety-five thousand, six hundred forty".