1282940 has 24 divisors (see below), whose sum is σ = 2812320. Its totient is φ = 490688.

The previous prime is 1282933. The next prime is 1282943. The reversal of 1282940 is 492821.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282943) 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, 935 + ... + 1854.

It is an arithmetic number, because the mean of its divisors is an integer number (117180).

2^1282940 is an apocalyptic number.

1282940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1282940 is an abundant number, since it is smaller than the sum of its proper divisors (1529380).

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

1282940 is a wasteful number, since it uses less digits than its factorization.

1282940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1282940 is about 1132.6694133771. The cubic root of 1282940 is about 108.6597701387.

It can be divided in two parts, 1282 and 940, that added together give a palindrome (2222).

The spelling of 1282940 in words is "one million, two hundred eighty-two thousand, nine hundred forty".