140042430 has 192 divisors, whose sum is σ = 431241408. Its totient is φ = 31150080.

The previous prime is 140042411. The next prime is 140042453. The reversal of 140042430 is 34240041.

It is a super-3 number, since 3×140042430³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 891912 + ... + 892068.

It is an arithmetic number, because the mean of its divisors is an integer number (2246049).

Almost surely, 2^140042430 is an apocalyptic number.

140042430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140042430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215620704).

140042430 is an abundant number, since it is smaller than the sum of its proper divisors (291198978).

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

140042430 is a wasteful number, since it uses less digits than its factorization.

140042430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 140042430 is about 11833.9524251199. The cubic root of 140042430 is about 519.3018614402.

Adding to 140042430 its reverse (34240041), we get a palindrome (174282471).

The spelling of 140042430 in words is "one hundred forty million, forty-two thousand, four hundred thirty".