1145214721240 has 32 divisors (see below), whose sum is σ = 2600814750480. Its totient is φ = 453804710272.

The previous prime is 1145214721187. The next prime is 1145214721243. The reversal of 1145214721240 is 421274125411.

It is a junction number, because it is equal to n+sod(n) for n = 1145214721196 and 1145214721205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145214721243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133782487 + ... + 133791046.

Almost surely, 2^{1145214721240} is an apocalyptic number.

1145214721240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145214721240 is an abundant number, since it is smaller than the sum of its proper divisors (1455600029240).

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

1145214721240 is a wasteful number, since it uses less digits than its factorization.

1145214721240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267573651 (or 267573647 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

Adding to 1145214721240 its reverse (421274125411), we get a palindrome (1566488846651).

The spelling of 1145214721240 in words is "one trillion, one hundred forty-five billion, two hundred fourteen million, seven hundred twenty-one thousand, two hundred forty".