1120421321406 has 64 divisors (see below), whose sum is σ = 2538627428160. Its totient is φ = 366192074880.

The previous prime is 1120421321387. The next prime is 1120421321419. The reversal of 1120421321406 is 6041231240211.

1120421321406 is a `hidden beast` number, since 1 + 1 + 20 + 4 + 213 + 21 + 406 = 666.

It is a super-2 number, since 2×1120421321406² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120421321406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 507700 + ... + 1580696.

It is an arithmetic number, because the mean of its divisors is an integer number (39666053565).

Almost surely, 2^{1120421321406} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1120421321406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269313714080).

1120421321406 is an abundant number, since it is smaller than the sum of its proper divisors (1418206106754).

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

1120421321406 is a wasteful number, since it uses less digits than its factorization.

1120421321406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073386 (or 1073380 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1120421321406 its reverse (6041231240211), we get a palindrome (7161652561617).

The spelling of 1120421321406 in words is "one trillion, one hundred twenty billion, four hundred twenty-one million, three hundred twenty-one thousand, four hundred six".