1421424121440 has 48 divisors (see below), whose sum is σ = 4477485984048. Its totient is φ = 379046432256.

The previous prime is 1421424121417. The next prime is 1421424121541. The reversal of 1421424121440 is 441214241241.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1421424121440² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1421424121398 and 1421424121407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480649647 + ... + 1480650606.

It is an arithmetic number, because the mean of its divisors is an integer number (93280958001).

Almost surely, 2^{1421424121440} is an apocalyptic number.

1421424121440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421424121440 is an abundant number, since it is smaller than the sum of its proper divisors (3056061862608).

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

1421424121440 is a wasteful number, since it uses less digits than its factorization.

1421424121440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961300271 (or 2961300263 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

Adding to 1421424121440 its reverse (441214241241), we get a palindrome (1862638362681).

The spelling of 1421424121440 in words is "one trillion, four hundred twenty-one billion, four hundred twenty-four million, one hundred twenty-one thousand, four hundred forty".