140215739 has 2 divisors, whose sum is σ = 140215740. Its totient is φ = 140215738.

The previous prime is 140215709. The next prime is 140215741. The reversal of 140215739 is 937512041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140215739 - 2²⁰ = 139167163 is a prime.

It is a super-2 number, since 2×140215739² = 39320906926632242, which contains 22 as substring.

Together with 140215741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140215709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70107869 + 70107870.

It is an arithmetic number, because the mean of its divisors is an integer number (70107870).

Almost surely, 2^140215739 is an apocalyptic number.

140215739 is a deficient number, since it is larger than the sum of its proper divisors (1).

140215739 is an equidigital number, since it uses as much as digits as its factorization.

140215739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 140215739 is about 11841.2726934228. The cubic root of 140215739 is about 519.5159931752.

The spelling of 140215739 in words is "one hundred forty million, two hundred fifteen thousand, seven hundred thirty-nine".