140830434 has 32 divisors (see below), whose sum is σ = 318867840. Its totient is φ = 46056816.

The previous prime is 140830421. The next prime is 140830439. The reversal of 140830434 is 434038041.

It is a super-2 number, since 2×140830434² = 39666422281256712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 140830398 and 140830407.

It is not an unprimeable number, because it can be changed into a prime (140830439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21742 + ... + 27465.

It is an arithmetic number, because the mean of its divisors is an integer number (9964620).

Almost surely, 2^140830434 is an apocalyptic number.

140830434 is an abundant number, since it is smaller than the sum of its proper divisors (178037406).

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

140830434 is a wasteful number, since it uses less digits than its factorization.

140830434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49271 (or 49265 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 140830434 is about 11867.1999224754. The cubic root of 140830434 is about 520.2740591842.

Adding to 140830434 its reverse (434038041), we get a palindrome (574868475).

The spelling of 140830434 in words is "one hundred forty million, eight hundred thirty thousand, four hundred thirty-four".