140421834 has 48 divisors (see below), whose sum is σ = 348848448. Its totient is φ = 39989376.

The previous prime is 140421833. The next prime is 140421859. The reversal of 140421834 is 438124041.

140421834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140421798 and 140421807.

It is not an unprimeable number, because it can be changed into a prime (140421833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40809 + ... + 44115.

It is an arithmetic number, because the mean of its divisors is an integer number (7267676).

Almost surely, 2^140421834 is an apocalyptic number.

140421834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140421834 is an abundant number, since it is smaller than the sum of its proper divisors (208426614).

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

140421834 is a wasteful number, since it uses less digits than its factorization.

140421834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659 (or 3656 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 140421834 is about 11849.9718987009. The cubic root of 140421834 is about 519.7704040653.

Adding to 140421834 its reverse (438124041), we get a palindrome (578545875).

It can be divided in two parts, 14042 and 1834, that added together give a square (15876 = 126²).

The spelling of 140421834 in words is "one hundred forty million, four hundred twenty-one thousand, eight hundred thirty-four".