142345540 has 12 divisors (see below), whose sum is σ = 298925676. Its totient is φ = 56938208.

The previous prime is 142345531. The next prime is 142345561. The reversal of 142345540 is 45543241.

It can be written as a sum of positive squares in 2 ways, for example, as 86155524 + 56190016 = 9282^2 + 7496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142345499 and 142345508.

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, 3558619 + ... + 3558658.

It is an arithmetic number, because the mean of its divisors is an integer number (24910473).

Almost surely, 2^142345540 is an apocalyptic number.

142345540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142345540 is an abundant number, since it is smaller than the sum of its proper divisors (156580136).

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

142345540 is a wasteful number, since it uses less digits than its factorization.

142345540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7117286 (or 7117284 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 142345540 is about 11930.8650147422. The cubic root of 142345540 is about 522.1331750656.

Adding to 142345540 its reverse (45543241), we get a palindrome (187888781).

It can be divided in two parts, 1423 and 45540, that multiplied together give a triangular number (64803420 = T₁₁₃₈₄).

The spelling of 142345540 in words is "one hundred forty-two million, three hundred forty-five thousand, five hundred forty".