1240550040 has 64 divisors (see below), whose sum is σ = 3735185760. Its totient is φ = 329610240.

The previous prime is 1240550039. The next prime is 1240550063. The reversal of 1240550040 is 400550421.

It is a junction number, because it is equal to n+sod(n) for n = 1240549989 and 1240550016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14580 + ... + 51900.

Almost surely, 2^1240550040 is an apocalyptic number.

1240550040 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 1240550040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867592880).

1240550040 is an abundant number, since it is smaller than the sum of its proper divisors (2494635720).

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

1240550040 is a wasteful number, since it uses less digits than its factorization.

1240550040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37612 (or 37608 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1240550040 is about 35221.4429005968. The cubic root of 1240550040 is about 1074.4958992173.

The spelling of 1240550040 in words is "one billion, two hundred forty million, five hundred fifty thousand, forty".