142344040 has 32 divisors (see below), whose sum is σ = 321489000. Its totient is φ = 56721664.

The previous prime is 142343983. The next prime is 142344071. The reversal of 142344040 is 40443241.

It can be written as a sum of positive squares in 4 ways, for example, as 125484804 + 16859236 = 11202^2 + 4106^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4146 + ... + 17374.

Almost surely, 2^142344040 is an apocalyptic number.

142344040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142344040 is an abundant number, since it is smaller than the sum of its proper divisors (179144960).

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

142344040 is a wasteful number, since it uses less digits than its factorization.

142344040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13509 (or 13505 counting only the distinct ones).

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

The square root of 142344040 is about 11930.8021524120. The cubic root of 142344040 is about 522.1313410249.

Adding to 142344040 its reverse (40443241), we get a palindrome (182787281).

The spelling of 142344040 in words is "one hundred forty-two million, three hundred forty-four thousand, forty".