142890842 has 8 divisors (see below), whose sum is σ = 221250432. Its totient is φ = 69140700.

The previous prime is 142890841. The next prime is 142890871. The reversal of 142890842 is 248098241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 142890796 and 142890805.

It is not an unprimeable number, because it can be changed into a prime (142890841) 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, 1152284 + ... + 1152407.

It is an arithmetic number, because the mean of its divisors is an integer number (27656304).

Almost surely, 2^142890842 is an apocalyptic number.

142890842 is a deficient number, since it is larger than the sum of its proper divisors (78359590).

142890842 is a wasteful number, since it uses less digits than its factorization.

142890842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304724.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 142890842 is about 11953.6957465045. The cubic root of 142890842 is about 522.7990604983.

The spelling of 142890842 in words is "one hundred forty-two million, eight hundred ninety thousand, eight hundred forty-two".