140220137 has 2 divisors, whose sum is σ = 140220138. Its totient is φ = 140220136.

The previous prime is 140220103. The next prime is 140220149. The reversal of 140220137 is 731022041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72914521 + 67305616 = 8539^2 + 8204^2 .

It is a cyclic number.

It is not a de Polignac number, because 140220137 - 2²² = 136025833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140220337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70110068 + 70110069.

It is an arithmetic number, because the mean of its divisors is an integer number (70110069).

Almost surely, 2^140220137 is an apocalyptic number.

It is an amenable number.

140220137 is a deficient number, since it is larger than the sum of its proper divisors (1).

140220137 is an equidigital number, since it uses as much as digits as its factorization.

140220137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 140220137 is about 11841.4583983562. The cubic root of 140220137 is about 519.5214248228.

Adding to 140220137 its reverse (731022041), we get a palindrome (871242178).

The spelling of 140220137 in words is "one hundred forty million, two hundred twenty thousand, one hundred thirty-seven".