1242023232340 has 96 divisors (see below), whose sum is σ = 2935862060544. Its totient is φ = 437477928960.

The previous prime is 1242023232301. The next prime is 1242023232379. The reversal of 1242023232340 is 432323202421.

It is an interprime number because it is at equal distance from previous prime (1242023232301) and next prime (1242023232379).

It is a junction number, because it is equal to n+sod(n) for n = 1242023232299 and 1242023232308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383814 + ... + 1622146.

It is an arithmetic number, because the mean of its divisors is an integer number (30581896464).

Almost surely, 2^{1242023232340} is an apocalyptic number.

1242023232340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242023232340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467931030272).

1242023232340 is an abundant number, since it is smaller than the sum of its proper divisors (1693838828204).

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

1242023232340 is a wasteful number, since it uses less digits than its factorization.

1242023232340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238497 (or 1238495 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 1242023232340 its reverse (432323202421), we get a palindrome (1674346434761).

The spelling of 1242023232340 in words is "one trillion, two hundred forty-two billion, twenty-three million, two hundred thirty-two thousand, three hundred forty".