142171954 has 4 divisors (see below), whose sum is σ = 213257934. Its totient is φ = 71085976.

The previous prime is 142171903. The next prime is 142171957. The reversal of 142171954 is 459171241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80910025 + 61261929 = 8995^2 + 7827^2 .

It is a pancake number, because a pancake can be divided into 142171954 parts by 16862 straight cuts.

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 as a sum of consecutive naturals, namely, 35542987 + ... + 35542990.

Almost surely, 2^142171954 is an apocalyptic number.

142171954 is a deficient number, since it is larger than the sum of its proper divisors (71085980).

142171954 is an equidigital number, since it uses as much as digits as its factorization.

142171954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71085979.

The product of its digits is 10080, while the sum is 34.

The square root of 142171954 is about 11923.5881344501. The cubic root of 142171954 is about 521.9208469601.

The spelling of 142171954 in words is "one hundred forty-two million, one hundred seventy-one thousand, nine hundred fifty-four".