142223040 has 336 divisors, whose sum is σ = 532546560. Its totient is φ = 36080640.

The previous prime is 142223027. The next prime is 142223057. The reversal of 142223040 is 40322241.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2410531 + ... + 2410589.

It is an arithmetic number, because the mean of its divisors is an integer number (1584960).

Almost surely, 2^142223040 is an apocalyptic number.

142223040 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 142223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266273280).

142223040 is an abundant number, since it is smaller than the sum of its proper divisors (390323520).

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

142223040 is an equidigital number, since it uses as much as digits as its factorization.

142223040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142223040 is about 11925.7301663252. The cubic root of 142223040 is about 521.9833526201.

Adding to 142223040 its reverse (40322241), we get a palindrome (182545281).

The spelling of 142223040 in words is "one hundred forty-two million, two hundred twenty-three thousand, forty".