142577440 has 48 divisors (see below), whose sum is σ = 338160312. Its totient is φ = 56807424.

The previous prime is 142577423. The next prime is 142577467. The reversal of 142577440 is 44775241.

It is a happy number.

142577440 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 120033936 + 22543504 = 10956^2 + 4748^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142577396 and 142577405.

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, 42712 + ... + 45928.

Almost surely, 2^142577440 is an apocalyptic number.

142577440 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 142577440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169080156).

142577440 is an abundant number, since it is smaller than the sum of its proper divisors (195582872).

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

142577440 is a wasteful number, since it uses less digits than its factorization.

142577440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509 (or 3501 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 142577440 is about 11940.5795504238. The cubic root of 142577440 is about 522.4165629151.

The spelling of 142577440 in words is "one hundred forty-two million, five hundred seventy-seven thousand, four hundred forty".