142520040 has 128 divisors (see below), whose sum is σ = 511660800. Its totient is φ = 35078400.

The previous prime is 142520039. The next prime is 142520087. The reversal of 142520040 is 40025241.

142520040 is a `hidden beast` number, since 1 + 425 + 200 + 40 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 142519995 and 142520022.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8965 + ... + 19115.

It is an arithmetic number, because the mean of its divisors is an integer number (3997350).

Almost surely, 2^142520040 is an apocalyptic number.

142520040 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 142520040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255830400).

142520040 is an abundant number, since it is smaller than the sum of its proper divisors (369140760).

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

142520040 is a wasteful number, since it uses less digits than its factorization.

142520040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10184 (or 10174 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 142520040 is about 11938.1757400367. The cubic root of 142520040 is about 522.3464472509.

Adding to 142520040 its reverse (40025241), we get a palindrome (182545281).

The spelling of 142520040 in words is "one hundred forty-two million, five hundred twenty thousand, forty".