1421112345040 has 80 divisors (see below), whose sum is σ = 3336448864320. Its totient is φ = 562895790080.

The previous prime is 1421112345013. The next prime is 1421112345061. The reversal of 1421112345040 is 405432111241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4748976 + ... + 5039344.

It is an arithmetic number, because the mean of its divisors is an integer number (41705610804).

Almost surely, 2^{1421112345040} is an apocalyptic number.

1421112345040 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 1421112345040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668224432160).

1421112345040 is an abundant number, since it is smaller than the sum of its proper divisors (1915336519280).

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

1421112345040 is a wasteful number, since it uses less digits than its factorization.

1421112345040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290980 (or 290974 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1421112345040 its reverse (405432111241), we get a palindrome (1826544456281).

The spelling of 1421112345040 in words is "one trillion, four hundred twenty-one billion, one hundred twelve million, three hundred forty-five thousand, forty".