140434551 has 6 divisors (see below), whose sum is σ = 202849920. Its totient is φ = 93623028.

The previous prime is 140434549. The next prime is 140434571. The reversal of 140434551 is 155434041.

It is a happy number.

It is not a de Polignac number, because 140434551 - 2¹ = 140434549 is a prime.

It is a super-2 number, since 2×140434551² = 39443726229143202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140434531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7801911 + ... + 7801928.

It is an arithmetic number, because the mean of its divisors is an integer number (33808320).

Almost surely, 2^140434551 is an apocalyptic number.

140434551 is a deficient number, since it is larger than the sum of its proper divisors (62415369).

140434551 is a wasteful number, since it uses less digits than its factorization.

140434551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15603845 (or 15603842 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 140434551 is about 11850.5084701037. The cubic root of 140434551 is about 519.7860942196.

Adding to 140434551 its reverse (155434041), we get a palindrome (295868592).

The spelling of 140434551 in words is "one hundred forty million, four hundred thirty-four thousand, five hundred fifty-one".