142231550 has 24 divisors (see below), whose sum is σ = 264866976. Its totient is φ = 56824640.

The previous prime is 142231493. The next prime is 142231561. The reversal of 142231550 is 55132241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73394 + ... + 75306.

It is an arithmetic number, because the mean of its divisors is an integer number (11036124).

Almost surely, 2^142231550 is an apocalyptic number.

142231550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142231550 is a deficient number, since it is larger than the sum of its proper divisors (122635426).

142231550 is a wasteful number, since it uses less digits than its factorization.

142231550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412 (or 3407 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 142231550 is about 11926.0869525591. The cubic root of 142231550 is about 521.9937634737.

Adding to 142231550 its reverse (55132241), we get a palindrome (197363791).

The spelling of 142231550 in words is "one hundred forty-two million, two hundred thirty-one thousand, five hundred fifty".