142240000 has 180 divisors, whose sum is σ = 408669184. Its totient is φ = 48384000.

The previous prime is 142239971. The next prime is 142240009. The reversal of 142240000 is 42241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142240009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1119937 + ... + 1120063.

Almost surely, 2^142240000 is an apocalyptic number.

142240000 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 142240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204334592).

142240000 is an abundant number, since it is smaller than the sum of its proper divisors (266429184).

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

142240000 is an frugal number, since it uses more digits than its factorization.

142240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 142240000 is about 11926.4412127005. The cubic root of 142240000 is about 522.0041005144.

Adding to 142240000 its reverse (42241), we get a palindrome (142282241).

It can be divided in two parts, 14 and 2240000, that multiplied together give a square (31360000 = 5600²).

The spelling of 142240000 in words is "one hundred forty-two million, two hundred forty thousand".