140030240 has 144 divisors (see below), whose sum is σ = 393257592. Its totient is φ = 46964736.

The previous prime is 140030227. The next prime is 140030257. The reversal of 140030240 is 42030041.

It can be written as a sum of positive squares in 4 ways, for example, as 111429136 + 28601104 = 10556^2 + 5348^2 .

It is a super-2 number, since 2×140030240² = 39216936228915200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 415352 + ... + 415688.

Almost surely, 2^140030240 is an apocalyptic number.

140030240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140030240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196628796).

140030240 is an abundant number, since it is smaller than the sum of its proper divisors (253227352).

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

140030240 is a wasteful number, since it uses less digits than its factorization.

140030240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 140030240 is about 11833.4373704347. The cubic root of 140030240 is about 519.2867934512.

Adding to 140030240 its reverse (42030041), we get a palindrome (182060281).

The spelling of 140030240 in words is "one hundred forty million, thirty thousand, two hundred forty".