142478829 has 6 divisors (see below), whose sum is σ = 205802766. Its totient is φ = 94985880.

The previous prime is 142478807. The next prime is 142478839. The reversal of 142478829 is 928874241.

It can be written as a sum of positive squares in only one way, i.e., 130576329 + 11902500 = 11427^2 + 3450^2 .

It is not a de Polignac number, because 142478829 - 2¹¹ = 142476781 is a prime.

It is a super-2 number, since 2×142478829² = 40600433426422482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142478839) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7915482 + ... + 7915499.

It is an arithmetic number, because the mean of its divisors is an integer number (34300461).

Almost surely, 2^142478829 is an apocalyptic number.

It is an amenable number.

142478829 is a deficient number, since it is larger than the sum of its proper divisors (63323937).

142478829 is a wasteful number, since it uses less digits than its factorization.

142478829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15830987 (or 15830984 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 142478829 is about 11936.4495977657. The cubic root of 142478829 is about 522.2960952803.

The spelling of 142478829 in words is "one hundred forty-two million, four hundred seventy-eight thousand, eight hundred twenty-nine".