142837220 has 24 divisors (see below), whose sum is σ = 300444984. Its totient is φ = 57042176.

The previous prime is 142837157. The next prime is 142837223. The reversal of 142837220 is 22738241.

It can be written as a sum of positive squares in 4 ways, for example, as 29073664 + 113763556 = 5392^2 + 10666^2 .

It is not an unprimeable number, because it can be changed into a prime (142837223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7592 + ... + 18528.

It is an arithmetic number, because the mean of its divisors is an integer number (12518541).

Almost surely, 2^142837220 is an apocalyptic number.

142837220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142837220 is an abundant number, since it is smaller than the sum of its proper divisors (157607764).

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

142837220 is a wasteful number, since it uses less digits than its factorization.

142837220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11599 (or 11597 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 142837220 is about 11951.4526313750. The cubic root of 142837220 is about 522.7336561700.

The spelling of 142837220 in words is "one hundred forty-two million, eight hundred thirty-seven thousand, two hundred twenty".