1292040 has 96 divisors (see below), whose sum is σ = 4357080. Its totient is φ = 331776.

The previous prime is 1292029. The next prime is 1292063. The reversal of 1292040 is 402921.

It can be written as a sum of positive squares in 4 ways, for example, as 1205604 + 86436 = 1098^2 + 294^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 13272 + ... + 13368.

2^1292040 is an apocalyptic number.

1292040 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 1292040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2178540).

1292040 is an abundant number, since it is smaller than the sum of its proper divisors (3065040).

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

1292040 is a wasteful number, since it uses less digits than its factorization.

1292040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1292040 is about 1136.6793743180. The cubic root of 1292040 is about 108.9160760164.

Adding to 1292040 its reverse (402921), we get a palindrome (1694961).

The spelling of 1292040 in words is "one million, two hundred ninety-two thousand, forty".