140434423146 has 12 divisors (see below), whose sum is σ = 304274583522. Its totient is φ = 46811474376.

The previous prime is 140434423139. The next prime is 140434423147. The reversal of 140434423146 is 641324434041.

140434423146 is a `hidden beast` number, since 1 + 40 + 4 + 344 + 231 + 46 = 666.

It can be written as a sum of positive squares in only one way, i.e., 137859977025 + 2574446121 = 371295^2 + 50739^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140434423146.

It is not an unprimeable number, because it can be changed into a prime (140434423147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3900956181 + ... + 3900956216.

Almost surely, 2^140434423146 is an apocalyptic number.

140434423146 is an abundant number, since it is smaller than the sum of its proper divisors (163840160376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140434423146 is a wasteful number, since it uses less digits than its factorization.

140434423146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7801912405 (or 7801912402 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 140434423146 its reverse (641324434041), we get a palindrome (781758857187).

The spelling of 140434423146 in words is "one hundred forty billion, four hundred thirty-four million, four hundred twenty-three thousand, one hundred forty-six".