140420232431243 has 16 divisors (see below), whose sum is σ = 142964191729920. Its totient is φ = 137884101120000.

The previous prime is 140420232431197. The next prime is 140420232431329. The reversal of 140420232431243 is 342134232024041.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 140420232431243 - 2⁶ = 140420232431179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140420232430243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888606023 + ... + 888764031.

It is an arithmetic number, because the mean of its divisors is an integer number (8935261983120).

Almost surely, 2^{140420232431243} is an apocalyptic number.

140420232431243 is a deficient number, since it is larger than the sum of its proper divisors (2543959298677).

140420232431243 is a wasteful number, since it uses less digits than its factorization.

140420232431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182678.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 140420232431243 its reverse (342134232024041), we get a palindrome (482554464455284).

The spelling of 140420232431243 in words is "one hundred forty trillion, four hundred twenty billion, two hundred thirty-two million, four hundred thirty-one thousand, two hundred forty-three".