1292540 has 12 divisors (see below), whose sum is σ = 2714376. Its totient is φ = 517008.

The previous prime is 1292539. The next prime is 1292549. The reversal of 1292540 is 452921.

1292540 is nontrivially palindromic in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32294 + ... + 32333.

It is an arithmetic number, because the mean of its divisors is an integer number (226198).

2^1292540 is an apocalyptic number.

1292540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1292540 is an abundant number, since it is smaller than the sum of its proper divisors (1421836).

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

1292540 is a wasteful number, since it uses less digits than its factorization.

1292540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64636 (or 64634 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1292540 is about 1136.8992919340. The cubic root of 1292540 is about 108.9301238309.

The spelling of 1292540 in words is "one million, two hundred ninety-two thousand, five hundred forty".