142170550 has 12 divisors (see below), whose sum is σ = 264437316. Its totient is φ = 56868200.

The previous prime is 142170503. The next prime is 142170563. The reversal of 142170550 is 55071241.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1421656 + ... + 1421755.

It is an arithmetic number, because the mean of its divisors is an integer number (22036443).

Almost surely, 2^142170550 is an apocalyptic number.

142170550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142170550 is a deficient number, since it is larger than the sum of its proper divisors (122266766).

142170550 is a wasteful number, since it uses less digits than its factorization.

142170550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843423 (or 2843418 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 142170550 is about 11923.5292594097. The cubic root of 142170550 is about 521.9191289014.

The spelling of 142170550 in words is "one hundred forty-two million, one hundred seventy thousand, five hundred fifty".