140212157 has 2 divisors, whose sum is σ = 140212158. Its totient is φ = 140212156.

The previous prime is 140212043. The next prime is 140212159. The reversal of 140212157 is 751212041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138627076 + 1585081 = 11774^2 + 1259^2 .

It is an emirp because it is prime and its reverse (751212041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140212157 - 2⁸ = 140211901 is a prime.

Together with 140212159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140212159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70106078 + 70106079.

It is an arithmetic number, because the mean of its divisors is an integer number (70106079).

Almost surely, 2^140212157 is an apocalyptic number.

It is an amenable number.

140212157 is a deficient number, since it is larger than the sum of its proper divisors (1).

140212157 is an equidigital number, since it uses as much as digits as its factorization.

140212157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 140212157 is about 11841.1214418230. The cubic root of 140212157 is about 519.5115692255.

Adding to 140212157 its reverse (751212041), we get a palindrome (891424198).

The spelling of 140212157 in words is "one hundred forty million, two hundred twelve thousand, one hundred fifty-seven".