142787738 has 4 divisors (see below), whose sum is σ = 214181610. Its totient is φ = 71393868.

The previous prime is 142787693. The next prime is 142787741. The reversal of 142787738 is 837787241.

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., 140588449 + 2199289 = 11857^2 + 1483^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142787692 and 142787701.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35696933 + ... + 35696936.

Almost surely, 2^142787738 is an apocalyptic number.

142787738 is a deficient number, since it is larger than the sum of its proper divisors (71393872).

142787738 is an equidigital number, since it uses as much as digits as its factorization.

142787738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71393871.

The product of its digits is 526848, while the sum is 47.

The square root of 142787738 is about 11949.3823271331. The cubic root of 142787738 is about 522.6732869978.

The spelling of 142787738 in words is "one hundred forty-two million, seven hundred eighty-seven thousand, seven hundred thirty-eight".