142238250 has 192 divisors, whose sum is σ = 480100608. Its totient is φ = 29520000.

The previous prime is 142238227. The next prime is 142238251. The reversal of 142238250 is 52832241.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142238251) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 172840 + ... + 173660.

It is an arithmetic number, because the mean of its divisors is an integer number (2500524).

Almost surely, 2^142238250 is an apocalyptic number.

142238250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142238250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240050304).

142238250 is an abundant number, since it is smaller than the sum of its proper divisors (337862358).

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

142238250 is a wasteful number, since it uses less digits than its factorization.

142238250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 142238250 is about 11926.3678460795. The cubic root of 142238250 is about 522.0019597407.

The spelling of 142238250 in words is "one hundred forty-two million, two hundred thirty-eight thousand, two hundred fifty".