1294840 has 16 divisors (see below), whose sum is σ = 2913480. Its totient is φ = 517920.

The previous prime is 1294823. The next prime is 1294841. The reversal of 1294840 is 484921.

It is a super-2 number, since 2×1294840² = 3353221251200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1294799 and 1294808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1294841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16146 + ... + 16225.

2^1294840 is an apocalyptic number.

1294840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1294840 is an abundant number, since it is smaller than the sum of its proper divisors (1618640).

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

1294840 is a wasteful number, since it uses less digits than its factorization.

1294840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32382 (or 32378 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1294840 is about 1137.9103655385. The cubic root of 1294840 is about 108.9946971581.

The spelling of 1294840 in words is "one million, two hundred ninety-four thousand, eight hundred forty".