1140020432381 has 2 divisors, whose sum is σ = 1140020432382. Its totient is φ = 1140020432380.

The previous prime is 1140020432347. The next prime is 1140020432393. The reversal of 1140020432381 is 1832340200411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050040831225 + 89979601156 = 1024715^2 + 299966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140020432381 is a prime.

It is a super-2 number, since 2×1140020432381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140020432321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570010216190 + 570010216191.

It is an arithmetic number, because the mean of its divisors is an integer number (570010216191).

Almost surely, 2^{1140020432381} is an apocalyptic number.

It is an amenable number.

1140020432381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140020432381 is an equidigital number, since it uses as much as digits as its factorization.

1140020432381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 1140020432381 its reverse (1832340200411), we get a palindrome (2972360632792).

The spelling of 1140020432381 in words is "one trillion, one hundred forty billion, twenty million, four hundred thirty-two thousand, three hundred eighty-one".