1294674221040 has 320 divisors, whose sum is σ = 4303158151680. Its totient is φ = 320850984960.

The previous prime is 1294674221039. The next prime is 1294674221047. The reversal of 1294674221040 is 401224764921.

It is a junction number, because it is equal to n+sod(n) for n = 1294674220983 and 1294674221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1294674221047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 329347875 + ... + 329351805.

It is an arithmetic number, because the mean of its divisors is an integer number (13447369224).

Almost surely, 2^{1294674221040} is an apocalyptic number.

1294674221040 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 1294674221040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2151579075840).

1294674221040 is an abundant number, since it is smaller than the sum of its proper divisors (3008483930640).

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

1294674221040 is a wasteful number, since it uses less digits than its factorization.

1294674221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960 (or 4954 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

Adding to 1294674221040 its reverse (401224764921), we get a palindrome (1695898985961).

The spelling of 1294674221040 in words is "one trillion, two hundred ninety-four billion, six hundred seventy-four million, two hundred twenty-one thousand, forty".