142978336 has 24 divisors (see below), whose sum is σ = 282183804. Its totient is φ = 71312640.

The previous prime is 142978331. The next prime is 142978337. The reversal of 142978336 is 633879241.

It can be written as a sum of positive squares in 2 ways, for example, as 142945936 + 32400 = 11956^2 + 180^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142978292 and 142978301.

It is not an unprimeable number, because it can be changed into a prime (142978331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8166 + ... + 18778.

Almost surely, 2^142978336 is an apocalyptic number.

142978336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

142978336 is a deficient number, since it is larger than the sum of its proper divisors (139205468).

142978336 is a wasteful number, since it uses less digits than its factorization.

142978336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11044 (or 11036 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 142978336 is about 11957.3548914465. The cubic root of 142978336 is about 522.9057443777.

The spelling of 142978336 in words is "one hundred forty-two million, nine hundred seventy-eight thousand, three hundred thirty-six".