830388142 has 4 divisors (see below), whose sum is σ = 1245582216. Its totient is φ = 415194070.

The previous prime is 830388131. The next prime is 830388149. The reversal of 830388142 is 241883038.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830388149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207597034 + ... + 207597037.

It is an arithmetic number, because the mean of its divisors is an integer number (311395554).

Almost surely, 2^830388142 is an apocalyptic number.

830388142 is a deficient number, since it is larger than the sum of its proper divisors (415194074).

830388142 is a wasteful number, since it uses less digits than its factorization.

830388142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415194073.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 830388142 is about 28816.4560971678. The cubic root of 830388142 is about 939.9261078177.

The spelling of 830388142 in words is "eight hundred thirty million, three hundred eighty-eight thousand, one hundred forty-two".