1121432143420 has 24 divisors (see below), whose sum is σ = 2357162174304. Its totient is φ = 448162443456.

The previous prime is 1121432143397. The next prime is 1121432143483. The reversal of 1121432143420 is 243412341211.

It is a happy number.

It is a super-2 number, since 2×1121432143420² (a number of 25 digits) contains 22 as substring.

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, 25628464 + ... + 25672183.

It is an arithmetic number, because the mean of its divisors is an integer number (98215090596).

Almost surely, 2^{1121432143420} is an apocalyptic number.

1121432143420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121432143420 is an abundant number, since it is smaller than the sum of its proper divisors (1235730030884).

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

1121432143420 is a wasteful number, since it uses less digits than its factorization.

1121432143420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51301749 (or 51301747 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1121432143420 its reverse (243412341211), we get a palindrome (1364844484631).

The spelling of 1121432143420 in words is "one trillion, one hundred twenty-one billion, four hundred thirty-two million, one hundred forty-three thousand, four hundred twenty".