1040412540 has 24 divisors (see below), whose sum is σ = 2913155280. Its totient is φ = 277443328.

The previous prime is 1040412511. The next prime is 1040412547. The reversal of 1040412540 is 452140401.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040412547) 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, 8670045 + ... + 8670164.

It is an arithmetic number, because the mean of its divisors is an integer number (121381470).

Almost surely, 2^1040412540 is an apocalyptic number.

1040412540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040412540 is an abundant number, since it is smaller than the sum of its proper divisors (1872742740).

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

1040412540 is a wasteful number, since it uses less digits than its factorization.

1040412540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17340221 (or 17340219 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1040412540 is about 32255.4265201997. The cubic root of 1040412540 is about 1013.2933504634.

Adding to 1040412540 its reverse (452140401), we get a palindrome (1492552941).

The spelling of 1040412540 in words is "one billion, forty million, four hundred twelve thousand, five hundred forty".