1155423022420 has 24 divisors (see below), whose sum is σ = 2428432532064. Its totient is φ = 461779840416.

The previous prime is 1155423022357. The next prime is 1155423022451. The reversal of 1155423022420 is 242203245511.

It is a happy number.

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, 24311202 + ... + 24358681.

It is an arithmetic number, because the mean of its divisors is an integer number (101184688836).

Almost surely, 2^{1155423022420} is an apocalyptic number.

1155423022420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155423022420 is an abundant number, since it is smaller than the sum of its proper divisors (1273009509644).

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

1155423022420 is a wasteful number, since it uses less digits than its factorization.

1155423022420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48671079 (or 48671077 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 1155423022420 its reverse (242203245511), we get a palindrome (1397626267931).

The spelling of 1155423022420 in words is "one trillion, one hundred fifty-five billion, four hundred twenty-three million, twenty-two thousand, four hundred twenty".