142521000 has 64 divisors (see below), whose sum is σ = 444674880. Its totient is φ = 38004800.

The previous prime is 142520971. The next prime is 142521019. The reversal of 142521000 is 125241.

142521000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 20754 + ... + 26753.

It is an arithmetic number, because the mean of its divisors is an integer number (6948045).

Almost surely, 2^142521000 is an apocalyptic number.

142521000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142521000 is an abundant number, since it is smaller than the sum of its proper divisors (302153880).

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

142521000 is a wasteful number, since it uses less digits than its factorization.

142521000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47531 (or 47517 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 142521000 is about 11938.2159471171. The cubic root of 142521000 is about 522.3476200719.

Adding to 142521000 its reverse (125241), we get a palindrome (142646241).

The spelling of 142521000 in words is "one hundred forty-two million, five hundred twenty-one thousand".