140123221345 has 64 divisors (see below), whose sum is σ = 179991383040. Its totient is φ = 104574412800.

The previous prime is 140123221339. The next prime is 140123221349. The reversal of 140123221345 is 543122321041.

It is not a de Polignac number, because 140123221345 - 2¹¹ = 140123219297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140123221349) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 169026391 + ... + 169027219.

It is an arithmetic number, because the mean of its divisors is an integer number (2812365360).

Almost surely, 2^140123221345 is an apocalyptic number.

It is an amenable number.

140123221345 is a deficient number, since it is larger than the sum of its proper divisors (39868161695).

140123221345 is a wasteful number, since it uses less digits than its factorization.

140123221345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 140123221345 its reverse (543122321041), we get a palindrome (683245542386).

The spelling of 140123221345 in words is "one hundred forty billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred forty-five".