140212997 has 2 divisors, whose sum is σ = 140212998. Its totient is φ = 140212996.

The previous prime is 140212993. The next prime is 140213011. The reversal of 140212997 is 799212041.

140212997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140161921 + 51076 = 11839^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 140212997 - 2² = 140212993 is a prime.

It is equal to p_7923563 and since 140212997 and 7923563 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140212993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70106498 + 70106499.

It is an arithmetic number, because the mean of its divisors is an integer number (70106499).

Almost surely, 2^140212997 is an apocalyptic number.

It is an amenable number.

140212997 is a deficient number, since it is larger than the sum of its proper divisors (1).

140212997 is an equidigital number, since it uses as much as digits as its factorization.

140212997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 140212997 is about 11841.1569113833. The cubic root of 140212997 is about 519.5126066744.

The spelling of 140212997 in words is "one hundred forty million, two hundred twelve thousand, nine hundred ninety-seven".