140390434187 has 2 divisors, whose sum is σ = 140390434188. Its totient is φ = 140390434186.

The previous prime is 140390434099. The next prime is 140390434267. The reversal of 140390434187 is 781434093041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140390434187 - 2¹² = 140390430091 is a prime.

It is a super-2 number, since 2×140390434187² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140390434087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70195217093 + 70195217094.

It is an arithmetic number, because the mean of its divisors is an integer number (70195217094).

Almost surely, 2^140390434187 is an apocalyptic number.

140390434187 is a deficient number, since it is larger than the sum of its proper divisors (1).

140390434187 is an equidigital number, since it uses as much as digits as its factorization.

140390434187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 140390434187 in words is "one hundred forty billion, three hundred ninety million, four hundred thirty-four thousand, one hundred eighty-seven".