140123040949 has 2 divisors, whose sum is σ = 140123040950. Its totient is φ = 140123040948.

The previous prime is 140123040887. The next prime is 140123040961. The reversal of 140123040949 is 949040321041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90529977924 + 49593063025 = 300882^2 + 222695^2 .

It is a cyclic number.

It is not a de Polignac number, because 140123040949 - 2²¹ = 140120943797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140123040989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70061520474 + 70061520475.

It is an arithmetic number, because the mean of its divisors is an integer number (70061520475).

Almost surely, 2^140123040949 is an apocalyptic number.

It is an amenable number.

140123040949 is a deficient number, since it is larger than the sum of its proper divisors (1).

140123040949 is an equidigital number, since it uses as much as digits as its factorization.

140123040949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 140123040949 in words is "one hundred forty billion, one hundred twenty-three million, forty thousand, nine hundred forty-nine".