142404340 has 24 divisors (see below), whose sum is σ = 322053480. Its totient is φ = 52579968.

The previous prime is 142404331. The next prime is 142404341. The reversal of 142404340 is 43404241.

It can be written as a sum of positive squares in 4 ways, for example, as 4717584 + 137686756 = 2172^2 + 11734^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142404341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273595 + ... + 274114.

It is an arithmetic number, because the mean of its divisors is an integer number (13418895).

Almost surely, 2^142404340 is an apocalyptic number.

142404340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142404340 is an abundant number, since it is smaller than the sum of its proper divisors (179649140).

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

142404340 is a wasteful number, since it uses less digits than its factorization.

142404340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547731 (or 547729 counting only the distinct ones).

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

The square root of 142404340 is about 11933.3289571687. The cubic root of 142404340 is about 522.2050593089.

Adding to 142404340 its reverse (43404241), we get a palindrome (185808581).

Subtracting from 142404340 its reverse (43404241), we obtain a palindrome (99000099).

The spelling of 142404340 in words is "one hundred forty-two million, four hundred four thousand, three hundred forty".