140641434 has 20 divisors (see below), whose sum is σ = 315141354. Its totient is φ = 46880424.

The previous prime is 140641429. The next prime is 140641441. The reversal of 140641434 is 434146041.

140641434 is a `hidden beast` number, since 14 + 0 + 641 + 4 + 3 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 97121025 + 43520409 = 9855^2 + 6597^2 .

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 = 140641398 and 140641407.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 433917 + ... + 434240.

Almost surely, 2^140641434 is an apocalyptic number.

140641434 is an abundant number, since it is smaller than the sum of its proper divisors (174499920).

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

140641434 is an equidigital number, since it uses as much as digits as its factorization.

140641434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868171 (or 868162 counting only the distinct ones).

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

The square root of 140641434 is about 11859.2341236692. The cubic root of 140641434 is about 520.0412122169.

Adding to 140641434 its reverse (434146041), we get a palindrome (574787475).

The spelling of 140641434 in words is "one hundred forty million, six hundred forty-one thousand, four hundred thirty-four".