1023340400120 has 32 divisors (see below), whose sum is σ = 2302545042000. Its totient is φ = 409330979328.

The previous prime is 1023340400107. The next prime is 1023340400123. The reversal of 1023340400120 is 210040433201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1023340400092 and 1023340400101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023340400123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5380487 + ... + 5567433.

Almost surely, 2^{1023340400120} is an apocalyptic number.

1023340400120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023340400120 is an abundant number, since it is smaller than the sum of its proper divisors (1279204641880).

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

1023340400120 is a wasteful number, since it uses less digits than its factorization.

1023340400120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323807 (or 323803 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1023340400120 its reverse (210040433201), we get a palindrome (1233380833321).

The spelling of 1023340400120 in words is "one trillion, twenty-three billion, three hundred forty million, four hundred thousand, one hundred twenty".