140887429 has 2 divisors, whose sum is σ = 140887430. Its totient is φ = 140887428.

The previous prime is 140887387. The next prime is 140887433. The reversal of 140887429 is 924788041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139287204 + 1600225 = 11802^2 + 1265^2 .

It is an emirp because it is prime and its reverse (924788041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140887429 - 2⁷ = 140887301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140887459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70443714 + 70443715.

It is an arithmetic number, because the mean of its divisors is an integer number (70443715).

Almost surely, 2^140887429 is an apocalyptic number.

It is an amenable number.

140887429 is a deficient number, since it is larger than the sum of its proper divisors (1).

140887429 is an equidigital number, since it uses as much as digits as its factorization.

140887429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 140887429 is about 11869.6010463705. The cubic root of 140887429 is about 520.3442358258.

The spelling of 140887429 in words is "one hundred forty million, eight hundred eighty-seven thousand, four hundred twenty-nine".