142157929 has 3 divisors (see below), whose sum is σ = 142169853. Its totient is φ = 142146006.

The previous prime is 142157891. The next prime is 142157989. The reversal of 142157929 is 929751241.

It is a happy number.

The square root of 142157929 is 11923.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 929751241 = 23 ⋅40423967.

It is not a de Polignac number, because 142157929 - 2⁷ = 142157801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142157891 and 142157900.

It is not an unprimeable number, because it can be changed into a prime (142157989) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5962 + ... + 17884.

It is an arithmetic number, because the mean of its divisors is an integer number (47389951).

Almost surely, 2^142157929 is an apocalyptic number.

142157929 is the 11923-rd square number.

142157929 is the 5962-nd centered octagonal number.

It is an amenable number.

142157929 is a deficient number, since it is larger than the sum of its proper divisors (11924).

142157929 is an frugal number, since it uses more digits than its factorization.

142157929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23846 (or 11923 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The cubic root of 142157929 is about 521.9036842206.

The spelling of 142157929 in words is "one hundred forty-two million, one hundred fifty-seven thousand, nine hundred twenty-nine".