140341997 has 2 divisors, whose sum is σ = 140341998. Its totient is φ = 140341996.

The previous prime is 140341973. The next prime is 140342009. The reversal of 140341997 is 799143041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79673476 + 60668521 = 8926^2 + 7789^2 .

It is a cyclic number.

It is not a de Polignac number, because 140341997 - 2¹⁴ = 140325613 is a prime.

It is a super-2 number, since 2×140341997² = 39391752243896018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140341997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140341897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70170998 + 70170999.

It is an arithmetic number, because the mean of its divisors is an integer number (70170999).

Almost surely, 2^140341997 is an apocalyptic number.

It is an amenable number.

140341997 is a deficient number, since it is larger than the sum of its proper divisors (1).

140341997 is an equidigital number, since it uses as much as digits as its factorization.

140341997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 140341997 is about 11846.6027619736. The cubic root of 140341997 is about 519.6718800314.

The spelling of 140341997 in words is "one hundred forty million, three hundred forty-one thousand, nine hundred ninety-seven".