142304040 has 160 divisors (see below), whose sum is σ = 482993280. Its totient is φ = 37577088.

The previous prime is 142304039. The next prime is 142304069. The reversal of 142304040 is 40403241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 540949 + ... + 541211.

It is an arithmetic number, because the mean of its divisors is an integer number (3018708).

Almost surely, 2^142304040 is an apocalyptic number.

142304040 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 142304040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241496640).

142304040 is an abundant number, since it is smaller than the sum of its proper divisors (340689240).

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

142304040 is a wasteful number, since it uses less digits than its factorization.

142304040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142304040 is about 11929.1257014083. The cubic root of 142304040 is about 522.0824285210.

Adding to 142304040 its reverse (40403241), we get a palindrome (182707281).

The spelling of 142304040 in words is "one hundred forty-two million, three hundred four thousand, forty".