1245911040 has 288 divisors, whose sum is σ = 4714491600. Its totient is φ = 301793280.

The previous prime is 1245910999. The next prime is 1245911041. The reversal of 1245911040 is 401195421.

1245911040 is a `hidden beast` number, since 1 + 24 + 591 + 10 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-3 number, since 3×1245911040³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1245910995 and 1245911013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245911041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1013146 + ... + 1014374.

Almost surely, 2^1245911040 is an apocalyptic number.

1245911040 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 1245911040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2357245800).

1245911040 is an abundant number, since it is smaller than the sum of its proper divisors (3468580560).

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

1245911040 is a wasteful number, since it uses less digits than its factorization.

1245911040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273 (or 1250 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1245911040 is about 35297.4650647890. The cubic root of 1245911040 is about 1076.0414756243.

The spelling of 1245911040 in words is "one billion, two hundred forty-five million, nine hundred eleven thousand, forty".