142171953 has 32 divisors (see below), whose sum is σ = 239603712. Its totient is φ = 72835200.

The previous prime is 142171903. The next prime is 142171957. The reversal of 142171953 is 359171241.

142171953 is a nontrivial binomial coefficient, being equal to C(16863, 2).

It is not a de Polignac number, because 142171953 - 2¹³ = 142163761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (142171957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12648 + ... + 21078.

It is an arithmetic number, because the mean of its divisors is an integer number (7487616).

Almost surely, 2^142171953 is an apocalyptic number.

142171953 is the 16862-nd triangular number.

It is an amenable number.

142171953 is a deficient number, since it is larger than the sum of its proper divisors (97431759).

142171953 is a wasteful number, since it uses less digits than its factorization.

142171953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525.

The product of its digits is 7560, while the sum is 33.

The square root of 142171953 is about 11923.5880925164. The cubic root of 142171953 is about 521.9208457364.

The spelling of 142171953 in words is "one hundred forty-two million, one hundred seventy-one thousand, nine hundred fifty-three".