140442340 has 12 divisors (see below), whose sum is σ = 294928956. Its totient is φ = 56176928.

The previous prime is 140442299. The next prime is 140442359. The reversal of 140442340 is 43244041.

It can be written as a sum of positive squares in 2 ways, for example, as 15539364 + 124902976 = 3942^2 + 11176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3511039 + ... + 3511078.

It is an arithmetic number, because the mean of its divisors is an integer number (24577413).

Almost surely, 2^140442340 is an apocalyptic number.

140442340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140442340 is an abundant number, since it is smaller than the sum of its proper divisors (154486616).

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

140442340 is a wasteful number, since it uses less digits than its factorization.

140442340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7022126 (or 7022124 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 140442340 is about 11850.8371012347. The cubic root of 140442340 is about 519.7957037708.

Adding to 140442340 its reverse (43244041), we get a palindrome (183686381).

It can be divided in two parts, 14044 and 2340, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 140442340 in words is "one hundred forty million, four hundred forty-two thousand, three hundred forty".