140235144 has 64 divisors (see below), whose sum is σ = 402124800. Its totient is φ = 39921984.

The previous prime is 140235133. The next prime is 140235197. The reversal of 140235144 is 441532041.

It is a super-2 number, since 2×140235144² = 39331791225401472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50217 + ... + 52935.

It is an arithmetic number, because the mean of its divisors is an integer number (6283200).

Almost surely, 2^140235144 is an apocalyptic number.

140235144 is a gapful number since it is divisible by the number (14) 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 140235144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201062400).

140235144 is an abundant number, since it is smaller than the sum of its proper divisors (261889656).

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

140235144 is a wasteful number, since it uses less digits than its factorization.

140235144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042 (or 3038 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 140235144 is about 11842.0920449049. The cubic root of 140235144 is about 519.5399580142.

Adding to 140235144 its reverse (441532041), we get a palindrome (581767185).

The spelling of 140235144 in words is "one hundred forty million, two hundred thirty-five thousand, one hundred forty-four".