140144430 has 64 divisors (see below), whose sum is σ = 357758208. Its totient is φ = 35013120.

The previous prime is 140144429. The next prime is 140144449. The reversal of 140144430 is 34441041.

It is a super-2 number, since 2×140144430² = 39280922520049800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140144397 and 140144406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143845 + ... + 144815.

It is an arithmetic number, because the mean of its divisors is an integer number (5589972).

Almost surely, 2^140144430 is an apocalyptic number.

140144430 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 140144430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178879104).

140144430 is an abundant number, since it is smaller than the sum of its proper divisors (217613778).

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

140144430 is a wasteful number, since it uses less digits than its factorization.

140144430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140144430 is about 11838.2612743595. The cubic root of 140144430 is about 519.4279087986.

Adding to 140144430 its reverse (34441041), we get a palindrome (174585471).

The spelling of 140144430 in words is "one hundred forty million, one hundred forty-four thousand, four hundred thirty".