142578020 has 48 divisors (see below), whose sum is σ = 331182768. Its totient is φ = 51217920.

The previous prime is 142578013. The next prime is 142578047. The reversal of 142578020 is 20875241.

142578020 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 8 ways, for example, as 682276 + 141895744 = 826^2 + 11912^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2210 + ... + 17030.

It is an arithmetic number, because the mean of its divisors is an integer number (6899641).

Almost surely, 2^142578020 is an apocalyptic number.

142578020 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 142578020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165591384).

142578020 is an abundant number, since it is smaller than the sum of its proper divisors (188604748).

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

142578020 is a wasteful number, since it uses less digits than its factorization.

142578020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14880 (or 14878 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 142578020 is about 11940.6038373275. The cubic root of 142578020 is about 522.4172713049.

It can be divided in two parts, 1425780 and 20, that multiplied together give a square (28515600 = 5340²).

The spelling of 142578020 in words is "one hundred forty-two million, five hundred seventy-eight thousand, twenty".