1012540 has 12 divisors (see below), whose sum is σ = 2126376. Its totient is φ = 405008.

The previous prime is 1012523. The next prime is 1012547. The reversal of 1012540 is 452101.

1012540 = T₄₄₅ + T₄₄₆ + ... + T₄₅₄.

It is a self number, because there is not a number n which added to its sum of digits gives 1012540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012547) 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, 25294 + ... + 25333.

It is an arithmetic number, because the mean of its divisors is an integer number (177198).

2^1012540 is an apocalyptic number.

1012540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012540 is an abundant number, since it is smaller than the sum of its proper divisors (1113836).

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

1012540 is a wasteful number, since it uses less digits than its factorization.

1012540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50636 (or 50634 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1012540 is about 1006.2504658384. The cubic root of 1012540 is about 100.4162648316.

Adding to 1012540 its reverse (452101), we get a palindrome (1464641).

The spelling of 1012540 in words is "one million, twelve thousand, five hundred forty".