142346240 has 48 divisors (see below), whose sum is σ = 341572140. Its totient is φ = 56934400.

The previous prime is 142346231. The next prime is 142346251. The reversal of 142346240 is 42643241.

It can be written as a sum of positive squares in 2 ways, for example, as 140944384 + 1401856 = 11872^2 + 1184^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3290 + ... + 17190.

Almost surely, 2^142346240 is an apocalyptic number.

142346240 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 142346240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170786070).

142346240 is an abundant number, since it is smaller than the sum of its proper divisors (199225900).

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

142346240 is an equidigital number, since it uses as much as digits as its factorization.

142346240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13928 (or 13908 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 142346240 is about 11930.8943503830. The cubic root of 142346240 is about 522.1340309468.

Adding to 142346240 its reverse (42643241), we get a palindrome (184989481).

The spelling of 142346240 in words is "one hundred forty-two million, three hundred forty-six thousand, two hundred forty".