140056342121 has 2 divisors, whose sum is σ = 140056342122. Its totient is φ = 140056342120.

The previous prime is 140056342099. The next prime is 140056342141. The reversal of 140056342121 is 121243650041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98699018896 + 41357323225 = 314164^2 + 203365^2 .

It is a cyclic number.

It is not a de Polignac number, because 140056342121 - 2²⁶ = 139989233257 is a prime.

It is not a weakly prime, because it can be changed into another prime (140056342141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70028171060 + 70028171061.

It is an arithmetic number, because the mean of its divisors is an integer number (70028171061).

Almost surely, 2^140056342121 is an apocalyptic number.

It is an amenable number.

140056342121 is a deficient number, since it is larger than the sum of its proper divisors (1).

140056342121 is an equidigital number, since it uses as much as digits as its factorization.

140056342121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 140056342121 its reverse (121243650041), we get a palindrome (261299992162).

The spelling of 140056342121 in words is "one hundred forty billion, fifty-six million, three hundred forty-two thousand, one hundred twenty-one".