1426273343040 has 448 divisors, whose sum is σ = 5815768928256. Its totient is φ = 287843770368.

The previous prime is 1426273343039. The next prime is 1426273343041. The reversal of 1426273343040 is 403433726241.

It is an interprime number because it is at equal distance from previous prime (1426273343039) and next prime (1426273343041).

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1426273343040.

It is not an unprimeable number, because it can be changed into a prime (1426273343041) 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, 1654359 + ... + 2364201.

It is an arithmetic number, because the mean of its divisors is an integer number (12981627072).

Almost surely, 2^{1426273343040} is an apocalyptic number.

1426273343040 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 1426273343040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2907884464128).

1426273343040 is an abundant number, since it is smaller than the sum of its proper divisors (4389495585216).

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

1426273343040 is a wasteful number, since it uses less digits than its factorization.

1426273343040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709906 (or 709896 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 39.

The spelling of 1426273343040 in words is "one trillion, four hundred twenty-six billion, two hundred seventy-three million, three hundred forty-three thousand, forty".